111121200202100 has 72 divisors (see below), whose sum is σ = 263282337268608. Its totient is φ = 40372662988800.

The previous prime is 111121200202031. The next prime is 111121200202109. The reversal of 111121200202100 is 1202002121111.

It is a super-2 number, since 2×111121200202100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121200202109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42538844 + ... + 45075443.

Almost surely, 2^{111121200202100} is an apocalyptic number.

111121200202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121200202100 is an abundant number, since it is smaller than the sum of its proper divisors (152161137066508).

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

111121200202100 is a wasteful number, since it uses less digits than its factorization.

111121200202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87615465 (or 87615458 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111121200202100 its reverse (1202002121111), we get a palindrome (112323202323211).

The spelling of 111121200202100 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred million, two hundred two thousand, one hundred".