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1121111112 = 2331119223507
BaseRepresentation
bin100001011010010…
…1100110001001000
32220010120100022210
41002310230301020
54244001023422
6303125145120
736532200342
oct10264546110
92803510283
101121111112
11525924410
1227355b1a0
1314b362a74
14a8c76292
156865610c
hex42d2cc48

1121111112 has 64 divisors (see below), whose sum is σ = 3218515200. Its totient is φ = 321848640.

The previous prime is 1121111111. The next prime is 1121111119. The reversal of 1121111112 is 2111111211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is not an unprimeable number, because it can be changed into a prime (1121111111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106738 + ... + 116769.

It is an arithmetic number, because the mean of its divisors is an integer number (50289300).

Almost surely, 21121111112 is an apocalyptic number.

1121111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121111112 is an abundant number, since it is smaller than the sum of its proper divisors (2097404088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121111112 is a wasteful number, since it uses less digits than its factorization.

1121111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223546 (or 223542 counting only the distinct ones).

The product of its digits is 4, while the sum is 12.

The square root of 1121111112 is about 33482.9973568676. The cubic root of 1121111112 is about 1038.8421260649.

Adding to 1121111112 its reverse (2111111211), we get a palindrome (3232222323).

Subtracting 1121111112 from its reverse (2111111211), we obtain a palindrome (990000099).

It can be divided in two parts, 11 and 21111112, that multiplied together give a palindrome (232222232).

The spelling of 1121111112 in words is "one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 11 12 19 22 24 33 38 44 57 66 76 88 114 132 152 209 228 264 418 456 627 836 1254 1672 2508 5016 223507 447014 670521 894028 1341042 1788056 2458577 2682084 4246633 4917154 5364168 7375731 8493266 9834308 12739899 14751462 16986532 19668616 25479798 29502924 33973064 46712963 50959596 59005848 93425926 101919192 140138889 186851852 280277778 373703704 560555556 1121111112