13222179812 has 12 divisors (see below), whose sum is σ = 23195391660. Its totient is φ = 6594925056.

The previous prime is 13222179797. The next prime is 13222179821. The reversal of 13222179812 is 21897122231.

It can be written as a sum of positive squares in 2 ways, for example, as 7173073636 + 6049106176 = 84694^2 + 77776^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039373 + ... + 4042644.

It is an arithmetic number, because the mean of its divisors is an integer number (1932949305).

Almost surely, 2^13222179812 is an apocalyptic number.

It is an amenable number.

13222179812 is a deficient number, since it is larger than the sum of its proper divisors (9973211848).

13222179812 is a wasteful number, since it uses less digits than its factorization.

13222179812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082430 (or 8082428 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The spelling of 13222179812 in words is "thirteen billion, two hundred twenty-two million, one hundred seventy-nine thousand, eight hundred twelve".