121331211200 has 84 divisors (see below), whose sum is σ = 303006858552. Its totient is φ = 47808076800.

The previous prime is 121331211193. The next prime is 121331211203. The reversal of 121331211200 is 2112133121.

It is a super-2 number, since 2×121331211200² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331211203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458711 + ... + 673110.

Almost surely, 2^121331211200 is an apocalyptic number.

121331211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121331211200 is an abundant number, since it is smaller than the sum of its proper divisors (181675647352).

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

121331211200 is a wasteful number, since it uses less digits than its factorization.

121331211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131910 (or 1131895 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121331211200 its reverse (2112133121), we get a palindrome (123443344321).

The spelling of 121331211200 in words is "one hundred twenty-one billion, three hundred thirty-one million, two hundred eleven thousand, two hundred".