22017217924 has 45 divisors (see below), whose sum is σ = 41836161507. Its totient is φ = 10138645296.

The previous prime is 22017217909. The next prime is 22017217927. The reversal of 22017217924 is 42971271022.

The square root of 22017217924 is 148382.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 10916488324 + 11100729600 = 104482^2 + 105360^2 .

It is a super-2 number, since 2×22017217924² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22017217927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 50152897 + ... + 50153335.

Almost surely, 2^22017217924 is an apocalyptic number.

22017217924 is the 148382-nd square number.

It is an amenable number.

22017217924 is a deficient number, since it is larger than the sum of its proper divisors (19818943583).

22017217924 is an frugal number, since it uses more digits than its factorization.

22017217924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

Multiplying 22017217924 by its product of nonzero digits (28224), we get a square (621413958686976 = 24928176²).

Adding to 22017217924 its reverse (42971271022), we get a palindrome (64988488946).

The spelling of 22017217924 in words is "twenty-two billion, seventeen million, two hundred seventeen thousand, nine hundred twenty-four".