121131331000 has 64 divisors (see below), whose sum is σ = 285186638880. Its totient is φ = 48155212800.

The previous prime is 121131330979. The next prime is 121131331043. The reversal of 121131331000 is 133131121.

It is a super-2 number, since 2×121131331000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208569 + ... + 534568.

Almost surely, 2^121131331000 is an apocalyptic number.

121131331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121131331000 is an abundant number, since it is smaller than the sum of its proper divisors (164055307880).

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

121131331000 is a wasteful number, since it uses less digits than its factorization.

121131331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743321 (or 743307 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 121131331000 its reverse (133131121), we get a palindrome (121264462121).

The spelling of 121131331000 in words is "one hundred twenty-one billion, one hundred thirty-one million, three hundred thirty-one thousand".