121251596944 has 45 divisors (see below), whose sum is σ = 236536220739. Its totient is φ = 60212819040.

The previous prime is 121251596831. The next prime is 121251596971. The reversal of 121251596944 is 449695152121.

It is a happy number.

The square root of 121251596944 is 348212.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×121251596944² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 366318859 + ... + 366319189.

Almost surely, 2^121251596944 is an apocalyptic number.

121251596944 is the 348212-nd square number.

It is an amenable number.

121251596944 is a deficient number, since it is larger than the sum of its proper divisors (115284623795).

121251596944 is an frugal number, since it uses more digits than its factorization.

121251596944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 596 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

Multiplying 121251596944 by its sum of digits (49), we get a square (5941328250256 = 2437484²).

The spelling of 121251596944 in words is "one hundred twenty-one billion, two hundred fifty-one million, five hundred ninety-six thousand, nine hundred forty-four".