125121100388 has 12 divisors (see below), whose sum is σ = 220356588732. Its totient is φ = 62162075040.

The previous prime is 125121100331. The next prime is 125121100439. The reversal of 125121100388 is 883001121521.

It can be written as a sum of positive squares in 2 ways, for example, as 33785380864 + 91335719524 = 183808^2 + 302218^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99618083 + ... + 99619338.

It is an arithmetic number, because the mean of its divisors is an integer number (18363049061).

Almost surely, 2^125121100388 is an apocalyptic number.

It is an amenable number.

125121100388 is a deficient number, since it is larger than the sum of its proper divisors (95235488344).

125121100388 is a wasteful number, since it uses less digits than its factorization.

125121100388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199237582 (or 199237580 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 32.

The spelling of 125121100388 in words is "one hundred twenty-five billion, one hundred twenty-one million, one hundred thousand, three hundred eighty-eight".