13000231423221 has 32 divisors (see below), whose sum is σ = 20462881498368. Its totient is φ = 7186147891200.

The previous prime is 13000231423183. The next prime is 13000231423247. The reversal of 13000231423221 is 12232413200031.

It is not a de Polignac number, because 13000231423221 - 2⁷ = 13000231423093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13000231423191 and 13000231423200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000231423271) 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, 48221980 + ... + 48490821.

It is an arithmetic number, because the mean of its divisors is an integer number (639465046824).

Almost surely, 2^{13000231423221} is an apocalyptic number.

It is an amenable number.

13000231423221 is a deficient number, since it is larger than the sum of its proper divisors (7462650075147).

13000231423221 is a wasteful number, since it uses less digits than its factorization.

13000231423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96713021.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13000231423221 its reverse (12232413200031), we get a palindrome (25232644623252).

The spelling of 13000231423221 in words is "thirteen trillion, two hundred thirty-one million, four hundred twenty-three thousand, two hundred twenty-one".