13221811674 has 48 divisors (see below), whose sum is σ = 30200601600. Its totient is φ = 4174345440.

The previous prime is 13221811663. The next prime is 13221811697. The reversal of 13221811674 is 47611812231.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225849 + ... + 278300.

It is an arithmetic number, because the mean of its divisors is an integer number (629179200).

Almost surely, 2^13221811674 is an apocalyptic number.

13221811674 is an abundant number, since it is smaller than the sum of its proper divisors (16978789926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221811674 is a wasteful number, since it uses less digits than its factorization.

13221811674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504235 (or 504232 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The spelling of 13221811674 in words is "thirteen billion, two hundred twenty-one million, eight hundred eleven thousand, six hundred seventy-four".