121313121300 has 108 divisors (see below), whose sum is σ = 434570581536. Its totient is φ = 27728712000.

The previous prime is 121313121289. The next prime is 121313121353. The reversal of 121313121300 is 3121313121.

121313121300 is a `hidden beast` number, since 1 + 21 + 31 + 312 + 1 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9621726 + ... + 9634325.

Almost surely, 2^121313121300 is an apocalyptic number.

121313121300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313121300 is an abundant number, since it is smaller than the sum of its proper divisors (313257460236).

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

121313121300 is a wasteful number, since it uses less digits than its factorization.

121313121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19256078 (or 19256068 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121313121300 its reverse (3121313121), we get a palindrome (124434434421).

The spelling of 121313121300 in words is "one hundred twenty-one billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred".