121531425150 has 24 divisors (see below), whose sum is σ = 301397934744. Its totient is φ = 32408380000.

The previous prime is 121531425149. The next prime is 121531425163. The reversal of 121531425150 is 51524135121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405104601 + ... + 405104900.

It is an arithmetic number, because the mean of its divisors is an integer number (12558247281).

Almost surely, 2^121531425150 is an apocalyptic number.

121531425150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121531425150 is an abundant number, since it is smaller than the sum of its proper divisors (179866509594).

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

121531425150 is a wasteful number, since it uses less digits than its factorization.

121531425150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810209516 (or 810209511 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 121531425150 in words is "one hundred twenty-one billion, five hundred thirty-one million, four hundred twenty-five thousand, one hundred fifty".