21922768553266 has 32 divisors (see below), whose sum is σ = 39502131528960. Its totient is φ = 8921375079936.

The previous prime is 21922768553263. The next prime is 21922768553267. The reversal of 21922768553266 is 66235586722912.

It is a junction number, because it is equal to n+sod(n) for n = 21922768553198 and 21922768553207.

It is not an unprimeable number, because it can be changed into a prime (21922768553263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248434471 + ... + 248522698.

It is an arithmetic number, because the mean of its divisors is an integer number (1234441610280).

Almost surely, 2^{21922768553266} is an apocalyptic number.

21922768553266 is a deficient number, since it is larger than the sum of its proper divisors (17579362975694).

21922768553266 is a wasteful number, since it uses less digits than its factorization.

21922768553266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496957338.

The product of its digits is 130636800, while the sum is 64.

The spelling of 21922768553266 in words is "twenty-one trillion, nine hundred twenty-two billion, seven hundred sixty-eight million, five hundred fifty-three thousand, two hundred sixty-six".