22722551971 has 4 divisors (see below), whose sum is σ = 25968630832. Its totient is φ = 19476473112.

The previous prime is 22722551947. The next prime is 22722551987. The reversal of 22722551971 is 17915522722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22722551971 - 2⁵ = 22722551939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22722551171) 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, 1623039420 + ... + 1623039433.

It is an arithmetic number, because the mean of its divisors is an integer number (6492157708).

Almost surely, 2^22722551971 is an apocalyptic number.

22722551971 is a deficient number, since it is larger than the sum of its proper divisors (3246078861).

22722551971 is an equidigital number, since it uses as much as digits as its factorization.

22722551971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246078860.

The product of its digits is 176400, while the sum is 43.

The spelling of 22722551971 in words is "twenty-two billion, seven hundred twenty-two million, five hundred fifty-one thousand, nine hundred seventy-one".