12221625321 has 12 divisors (see below), whose sum is σ = 17655535872. Its totient is φ = 8146791576.

The previous prime is 12221625281. The next prime is 12221625323. The reversal of 12221625321 is 12352612221.

12221625321 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 625 + 32 + 1 = 666.

It is not a de Polignac number, because 12221625321 - 2¹⁰ = 12221624297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221625323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5680 + ... + 156446.

It is an arithmetic number, because the mean of its divisors is an integer number (1471294656).

Almost surely, 2^12221625321 is an apocalyptic number.

It is an amenable number.

12221625321 is a deficient number, since it is larger than the sum of its proper divisors (5433910551).

12221625321 is a wasteful number, since it uses less digits than its factorization.

12221625321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159780 (or 159777 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The spelling of 12221625321 in words is "twelve billion, two hundred twenty-one million, six hundred twenty-five thousand, three hundred twenty-one".