121373430981504 has 512 divisors, whose sum is σ = 382945759257600. Its totient is φ = 33701275238400.

The previous prime is 121373430981461. The next prime is 121373430981521. The reversal of 121373430981504 is 405189034373121.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 525627034 + ... + 525857894.

It is an arithmetic number, because the mean of its divisors is an integer number (747940936050).

Almost surely, 2^{121373430981504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121373430981504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191472879628800).

121373430981504 is an abundant number, since it is smaller than the sum of its proper divisors (261572328276096).

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

121373430981504 is a wasteful number, since it uses less digits than its factorization.

121373430981504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231174 (or 231162 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 121373430981504 in words is "one hundred twenty-one trillion, three hundred seventy-three billion, four hundred thirty million, nine hundred eighty-one thousand, five hundred four".