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111222021000020 = 22572860632777161
BaseRepresentation
bin11001010010011111100101…
…000011011000101101010100
3112120210201110212122121011212
4121102133211003120231110
5104034230144334000040
61032314405134520552
732266345235604050
oct3122374503305524
9476721425577155
10111222021000020
1132490aa3336557
12105836a5966158
134a0a264b81798
141d67262d14c60
15ccd2177c8d65
hex6527e50d8b54

111222021000020 has 48 divisors (see below), whose sum is σ = 266933879643648. Its totient is φ = 38133117308160.

The previous prime is 111222021000011. The next prime is 111222021000089. The reversal of 111222021000020 is 20000120222111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 111222020999959 and 111222021000004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38660240 + ... + 41437400.

It is an arithmetic number, because the mean of its divisors is an integer number (5561122492576).

Almost surely, 2111222021000020 is an apocalyptic number.

111222021000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222021000020 is an abundant number, since it is smaller than the sum of its proper divisors (155711858643628).

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

111222021000020 is a wasteful number, since it uses less digits than its factorization.

111222021000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063240 (or 3063238 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111222021000020 its reverse (20000120222111), we get a palindrome (131222141222131).

The spelling of 111222021000020 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-one million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 286063 572126 1144252 1430315 2002441 2777161 2860630 4004882 5554322 5721260 8009764 10012205 11108644 13885805 19440127 20024410 27771610 38880254 40048820 55543220 77760508 97200635 194401270 388802540 794443007143 1588886014286 3177772028572 3972215035715 5561101050001 7944430071430 11122202100002 15888860142860 22244404200004 27805505250005 55611010500010 111222021000020