13293820021 has 16 divisors (see below), whose sum is σ = 14465549376. Its totient is φ = 12165831936.

The previous prime is 13293820019. The next prime is 13293820031. The reversal of 13293820021 is 12002839231.

It is a cyclic number.

It is not a de Polignac number, because 13293820021 - 2¹ = 13293820019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13293820031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118110 + ... + 1129936.

It is an arithmetic number, because the mean of its divisors is an integer number (904096836).

Almost surely, 2^13293820021 is an apocalyptic number.

It is an amenable number.

13293820021 is a deficient number, since it is larger than the sum of its proper divisors (1171729355).

13293820021 is a wasteful number, since it uses less digits than its factorization.

13293820021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13668.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 13293820021 in words is "thirteen billion, two hundred ninety-three million, eight hundred twenty thousand, twenty-one".