13010023021 has 4 divisors (see below), whose sum is σ = 13010713344. Its totient is φ = 13009332700.

The previous prime is 13010022941. The next prime is 13010023027. The reversal of 13010023021 is 12032001031.

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 13010023021 - 2²¹ = 13007925869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13010022992 and 13010023010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13010023027) 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, 316075 + ... + 354856.

It is an arithmetic number, because the mean of its divisors is an integer number (3252678336).

Almost surely, 2^13010023021 is an apocalyptic number.

It is an amenable number.

13010023021 is a deficient number, since it is larger than the sum of its proper divisors (690323).

13010023021 is an equidigital number, since it uses as much as digits as its factorization.

13010023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690322.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13010023021 its reverse (12032001031), we get a palindrome (25042024052).

The spelling of 13010023021 in words is "thirteen billion, ten million, twenty-three thousand, twenty-one".