22771490217 has 16 divisors (see below), whose sum is σ = 34759569792. Its totient is φ = 12989721600.

The previous prime is 22771490179. The next prime is 22771490303. The reversal of 22771490217 is 71209417722.

It is not a de Polignac number, because 22771490217 - 2⁶ = 22771490153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22771490617) 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, 927534 + ... + 951767.

It is an arithmetic number, because the mean of its divisors is an integer number (2172473112).

Almost surely, 2^22771490217 is an apocalyptic number.

It is an amenable number.

22771490217 is a deficient number, since it is larger than the sum of its proper divisors (11988079575).

22771490217 is a wasteful number, since it uses less digits than its factorization.

22771490217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879888.

The product of its (nonzero) digits is 98784, while the sum is 42.

The spelling of 22771490217 in words is "twenty-two billion, seven hundred seventy-one million, four hundred ninety thousand, two hundred seventeen".