13021332243 has 16 divisors (see below), whose sum is σ = 17859023616. Its totient is φ = 8435694240.

The previous prime is 13021332239. The next prime is 13021332271. The reversal of 13021332243 is 34223312031.

It is not a de Polignac number, because 13021332243 - 2² = 13021332239 is a prime.

It is a super-2 number, since 2×13021332243² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13021337243) 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, 413455 + ... + 443832.

It is an arithmetic number, because the mean of its divisors is an integer number (1116188976).

Almost surely, 2^13021332243 is an apocalyptic number.

13021332243 is a deficient number, since it is larger than the sum of its proper divisors (4837691373).

13021332243 is an equidigital number, since it uses as much as digits as its factorization.

13021332243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857434.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13021332243 its reverse (34223312031), we get a palindrome (47244644274).

The spelling of 13021332243 in words is "thirteen billion, twenty-one million, three hundred thirty-two thousand, two hundred forty-three".