100402112100 has 72 divisors (see below), whose sum is σ = 290543154048. Its totient is φ = 26769622400.

The previous prime is 100402112087. The next prime is 100402112119. The reversal of 100402112100 is 1211204001.

It is a happy number.

It is a super-2 number, since 2×100402112100² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2151010 + ... + 2197190.

It is an arithmetic number, because the mean of its divisors is an integer number (4035321584).

Almost surely, 2^100402112100 is an apocalyptic number.

100402112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100402112100 is an abundant number, since it is smaller than the sum of its proper divisors (190141041948).

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

100402112100 is a wasteful number, since it uses less digits than its factorization.

100402112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53445 (or 53438 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100402112100 its reverse (1211204001), we get a palindrome (101613316101).

The spelling of 100402112100 in words is "one hundred billion, four hundred two million, one hundred twelve thousand, one hundred".