10124520021 has 64 divisors (see below), whose sum is σ = 18744330240. Its totient is φ = 5247141120.

The previous prime is 10124519971. The next prime is 10124520037. The reversal of 10124520021 is 12002542101.

10124520021 is a `hidden beast` number, since 1 + 0 + 124 + 520 + 0 + 21 = 666.

It is not a de Polignac number, because 10124520021 - 2¹⁷ = 10124388949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10124519976 and 10124520003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10124520041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 915501 + ... + 926493.

It is an arithmetic number, because the mean of its divisors is an integer number (292880160).

Almost surely, 2^10124520021 is an apocalyptic number.

10124520021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10124520021 is a deficient number, since it is larger than the sum of its proper divisors (8619810219).

10124520021 is a wasteful number, since it uses less digits than its factorization.

10124520021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11463 (or 11457 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The spelling of 10124520021 in words is "ten billion, one hundred twenty-four million, five hundred twenty thousand, twenty-one".