22121661322 has 8 divisors (see below), whose sum is σ = 33215777316. Its totient is φ = 11049735552.

The previous prime is 22121661307. The next prime is 22121661323. The reversal of 22121661322 is 22316612122.

It can be written as a sum of positive squares in 2 ways, for example, as 18670216321 + 3451445001 = 136639^2 + 58749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22121661323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545063 + ... + 5549050.

Almost surely, 2^22121661322 is an apocalyptic number.

22121661322 is a deficient number, since it is larger than the sum of its proper divisors (11094115994).

22121661322 is a wasteful number, since it uses less digits than its factorization.

22121661322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11095112.

The product of its digits is 3456, while the sum is 28.

The spelling of 22121661322 in words is "twenty-two billion, one hundred twenty-one million, six hundred sixty-one thousand, three hundred twenty-two".