22174965721 has 8 divisors (see below), whose sum is σ = 23344884000. Its totient is φ = 21005328960.

The previous prime is 22174965719. The next prime is 22174965749. The reversal of 22174965721 is 12756947122.

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

It is a cyclic number.

It is not a de Polignac number, because 22174965721 - 2¹ = 22174965719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22174965221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102186 + ... + 234076.

It is an arithmetic number, because the mean of its divisors is an integer number (2918110500).

Almost surely, 2^22174965721 is an apocalyptic number.

It is an amenable number.

22174965721 is a deficient number, since it is larger than the sum of its proper divisors (1169918279).

22174965721 is a wasteful number, since it uses less digits than its factorization.

22174965721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140759.

The product of its digits is 423360, while the sum is 46.

The spelling of 22174965721 in words is "twenty-two billion, one hundred seventy-four million, nine hundred sixty-five thousand, seven hundred twenty-one".