121303131000 has 128 divisors (see below), whose sum is σ = 388694928960. Its totient is φ = 31473216000.

The previous prime is 121303130987. The next prime is 121303131011. The reversal of 121303131000 is 131303121.

It is a super-2 number, since 2×121303131000² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435411 + ... + 657410.

Almost surely, 2^121303131000 is an apocalyptic number.

121303131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121303131000 is an abundant number, since it is smaller than the sum of its proper divisors (267391797960).

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

121303131000 is a wasteful number, since it uses less digits than its factorization.

121303131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092882 (or 1092868 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 121303131000 its reverse (131303121), we get a palindrome (121434434121).

The spelling of 121303131000 in words is "one hundred twenty-one billion, three hundred three million, one hundred thirty-one thousand".