121111200211100 has 72 divisors (see below), whose sum is σ = 288287237508816. Its totient is φ = 43797119040000.

The previous prime is 121111200211049. The next prime is 121111200211103. The reversal of 121111200211100 is 1112002111121.

It is a super-3 number, since 3×121111200211100³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111200211103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303947561 + ... + 304345760.

Almost surely, 2^{121111200211100} is an apocalyptic number.

121111200211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111200211100 is an abundant number, since it is smaller than the sum of its proper divisors (167176037297716).

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

121111200211100 is a wasteful number, since it uses less digits than its factorization.

121111200211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608293527 (or 608293520 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121111200211100 its reverse (1112002111121), we get a palindrome (122223202322221).

The spelling of 121111200211100 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, two hundred eleven thousand, one hundred".