121257162652 has 24 divisors (see below), whose sum is σ = 217391881392. Its totient is φ = 59145417600.

The previous prime is 121257162569. The next prime is 121257162661. The reversal of 121257162652 is 256261752121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3724798 + ... + 3757210.

It is an arithmetic number, because the mean of its divisors is an integer number (9057995058).

Almost surely, 2^121257162652 is an apocalyptic number.

It is an amenable number.

121257162652 is a deficient number, since it is larger than the sum of its proper divisors (96134718740).

121257162652 is a wasteful number, since it uses less digits than its factorization.

121257162652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55269 (or 55267 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The spelling of 121257162652 in words is "one hundred twenty-one billion, two hundred fifty-seven million, one hundred sixty-two thousand, six hundred fifty-two".