13221673772 has 24 divisors (see below), whose sum is σ = 24505812576. Its totient is φ = 6220229888.

The previous prime is 13221673739. The next prime is 13221673783. The reversal of 13221673772 is 27737612231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237518 + ... + 287850.

It is an arithmetic number, because the mean of its divisors is an integer number (1021075524).

Almost surely, 2^13221673772 is an apocalyptic number.

It is an amenable number.

13221673772 is a deficient number, since it is larger than the sum of its proper divisors (11284138804).

13221673772 is a wasteful number, since it uses less digits than its factorization.

13221673772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54217 (or 54215 counting only the distinct ones).

The product of its digits is 148176, while the sum is 41.

The spelling of 13221673772 in words is "thirteen billion, two hundred twenty-one million, six hundred seventy-three thousand, seven hundred seventy-two".