121330031504 has 80 divisors (see below), whose sum is σ = 270352982016. Its totient is φ = 52235318400.

The previous prime is 121330031461. The next prime is 121330031561. The reversal of 121330031504 is 405130033121.

It is a self number, because there is not a number n which added to its sum of digits gives 121330031504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19859 + ... + 493005.

Almost surely, 2^121330031504 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 121330031504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135176491008).

121330031504 is an abundant number, since it is smaller than the sum of its proper divisors (149022950512).

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

121330031504 is a wasteful number, since it uses less digits than its factorization.

121330031504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473244 (or 473238 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 121330031504 its reverse (405130033121), we get a palindrome (526460064625).

The spelling of 121330031504 in words is "one hundred twenty-one billion, three hundred thirty million, thirty-one thousand, five hundred four".