13002221231 has 16 divisors (see below), whose sum is σ = 13852127520. Its totient is φ = 12161909760.

The previous prime is 13002221209. The next prime is 13002221233. The reversal of 13002221231 is 13212220031.

It is a cyclic number.

It is not a de Polignac number, because 13002221231 - 2²⁶ = 12935112367 is a prime.

It is a super-2 number, since 2×13002221231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13002221233) 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, 4422560 + ... + 4425498.

It is an arithmetic number, because the mean of its divisors is an integer number (865757970).

Almost surely, 2^13002221231 is an apocalyptic number.

13002221231 is a deficient number, since it is larger than the sum of its proper divisors (849906289).

13002221231 is a wasteful number, since it uses less digits than its factorization.

13002221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13002221231 its reverse (13212220031), we get a palindrome (26214441262).

The spelling of 13002221231 in words is "thirteen billion, two million, two hundred twenty-one thousand, two hundred thirty-one".