111210212102100 has 72 divisors (see below), whose sum is σ = 323211120664320. Its totient is φ = 29523069742080.

The previous prime is 111210212102089. The next prime is 111210212102113. The reversal of 111210212102100 is 1201212012111.

It is a happy number.

It is a super-2 number, since 2×111210212102100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111210212102100.

It is a congruent number.

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, 831100605 + ... + 831234404.

It is an arithmetic number, because the mean of its divisors is an integer number (4489043342560).

Almost surely, 2^{111210212102100} is an apocalyptic number.

111210212102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210212102100 is an abundant number, since it is smaller than the sum of its proper divisors (212000908562220).

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

111210212102100 is a wasteful number, since it uses less digits than its factorization.

111210212102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662335249 (or 1662335242 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111210212102100 its reverse (1201212012111), we get a palindrome (112411424114211).

The spelling of 111210212102100 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred two thousand, one hundred".