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11211112300 = 2252112111123
BaseRepresentation
bin10100111000011101…
…11111111101101100
31001221022200111212111
422130032333331230
5140430021043200
65052245013404
7544551611413
oct123416777554
931838614774
1011211112300
114833420673
12220a6b4264
1310988a287b
14784d4647a
154593910ba
hex29c3bff6c

11211112300 has 18 divisors (see below), whose sum is σ = 24328113908. Its totient is φ = 4484444880.

The previous prime is 11211112277. The next prime is 11211112301. The reversal of 11211112300 is 321111211.

It is a happy number.

It is a super-2 number, since 2×112111123002 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11211112301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56055462 + ... + 56055661.

Almost surely, 211211112300 is an apocalyptic number.

11211112300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211112300 is an abundant number, since it is smaller than the sum of its proper divisors (13117001608).

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

11211112300 is a wasteful number, since it uses less digits than its factorization.

11211112300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112111137 (or 112111130 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11211112300 its reverse (321111211), we get a palindrome (11532223511).

The spelling of 11211112300 in words is "eleven billion, two hundred eleven million, one hundred twelve thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 112111123 224222246 448444492 560555615 1121111230 2242222460 2802778075 5605556150 11211112300