13234223021 has 4 divisors (see below), whose sum is σ = 13243524672. Its totient is φ = 13224921372.

The previous prime is 13234223017. The next prime is 13234223077. The reversal of 13234223021 is 12032243231.

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 13234223021 - 2² = 13234223017 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 (13234223081) 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, 4648691 + ... + 4651536.

It is an arithmetic number, because the mean of its divisors is an integer number (3310881168).

Almost surely, 2^13234223021 is an apocalyptic number.

It is an amenable number.

13234223021 is a deficient number, since it is larger than the sum of its proper divisors (9301651).

13234223021 is an equidigital number, since it uses as much as digits as its factorization.

13234223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301650.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13234223021 its reverse (12032243231), we get a palindrome (25266466252).

The spelling of 13234223021 in words is "thirteen billion, two hundred thirty-four million, two hundred twenty-three thousand, twenty-one".