21922768553271 has 32 divisors (see below), whose sum is σ = 30091371754752. Its totient is φ = 14188370576640.

The previous prime is 21922768553267. The next prime is 21922768553297. The reversal of 21922768553271 is 17235586722912.

It is a happy number.

It is not a de Polignac number, because 21922768553271 - 2² = 21922768553267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21922768555271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19785076 + ... + 20863718.

It is an arithmetic number, because the mean of its divisors is an integer number (940355367336).

Almost surely, 2^{21922768553271} is an apocalyptic number.

21922768553271 is a deficient number, since it is larger than the sum of its proper divisors (8168603201481).

21922768553271 is a wasteful number, since it uses less digits than its factorization.

21922768553271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079503.

The product of its digits is 25401600, while the sum is 60.

The spelling of 21922768553271 in words is "twenty-one trillion, nine hundred twenty-two billion, seven hundred sixty-eight million, five hundred fifty-three thousand, two hundred seventy-one".