121625165560772 has 6 divisors (see below), whose sum is σ = 212844039731358. Its totient is φ = 60812582780384.

The previous prime is 121625165560763. The next prime is 121625165560793. The reversal of 121625165560772 is 277065561526121.

It can be written as a sum of positive squares in only one way, i.e., 121065876964036 + 559288596736 = 11002994^2 + 747856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15203145695093 + ... + 15203145695100.

It is an arithmetic number, because the mean of its divisors is an integer number (35474006621893).

Almost surely, 2^{121625165560772} is an apocalyptic number.

It is an amenable number.

121625165560772 is a deficient number, since it is larger than the sum of its proper divisors (91218874170586).

121625165560772 is a wasteful number, since it uses less digits than its factorization.

121625165560772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30406291390197 (or 30406291390195 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 121625165560772 in words is "one hundred twenty-one trillion, six hundred twenty-five billion, one hundred sixty-five million, five hundred sixty thousand, seven hundred seventy-two".