22217439157 has 4 divisors (see below), whose sum is σ = 23386778080. Its totient is φ = 21048100236.

The previous prime is 22217439151. The next prime is 22217439169. The reversal of 22217439157 is 75193471222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22217439157 - 2³ = 22217439149 is a prime.

It is a super-2 number, since 2×22217439157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217439151) 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, 584669433 + ... + 584669470.

It is an arithmetic number, because the mean of its divisors is an integer number (5846694520).

Almost surely, 2^22217439157 is an apocalyptic number.

It is an amenable number.

22217439157 is a deficient number, since it is larger than the sum of its proper divisors (1169338923).

22217439157 is a wasteful number, since it uses less digits than its factorization.

22217439157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169338922.

The product of its digits is 211680, while the sum is 43.

The spelling of 22217439157 in words is "twenty-two billion, two hundred seventeen million, four hundred thirty-nine thousand, one hundred fifty-seven".