13021644213 has 32 divisors (see below), whose sum is σ = 19496947200. Its totient is φ = 8589043008.

The previous prime is 13021644211. The next prime is 13021644221. The reversal of 13021644213 is 31244612031.

It is a happy number.

13021644213 is a `hidden beast` number, since 1 + 3 + 0 + 2 + 1 + 644 + 2 + 13 = 666.

It is not a de Polignac number, because 13021644213 - 2¹ = 13021644211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021644211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1006695 + ... + 1019547.

It is an arithmetic number, because the mean of its divisors is an integer number (609279600).

Almost surely, 2^13021644213 is an apocalyptic number.

It is an amenable number.

13021644213 is a deficient number, since it is larger than the sum of its proper divisors (6475302987).

13021644213 is a wasteful number, since it uses less digits than its factorization.

13021644213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13258 (or 13252 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 13021644213 in words is "thirteen billion, twenty-one million, six hundred forty-four thousand, two hundred thirteen".