10013000021 has 4 divisors (see below), whose sum is σ = 10448347872. Its totient is φ = 9577652172.

The previous prime is 10012999979. The next prime is 10013000047. The reversal of 10013000021 is 12000031001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10013000021 - 2¹⁴ = 10012983637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012999972 and 10013000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10013000821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217673891 + ... + 217673936.

It is an arithmetic number, because the mean of its divisors is an integer number (2612086968).

Almost surely, 2^10013000021 is an apocalyptic number.

It is an amenable number.

10013000021 is a deficient number, since it is larger than the sum of its proper divisors (435347851).

10013000021 is an equidigital number, since it uses as much as digits as its factorization.

10013000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435347850.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 10013000021 its reverse (12000031001), we get a palindrome (22013031022).

The spelling of 10013000021 in words is "ten billion, thirteen million, twenty-one", and thus it is an aban number and an uban number.