22245231620 has 24 divisors (see below), whose sum is σ = 46790725464. Its totient is φ = 8883666176.

The previous prime is 22245231611. The next prime is 22245231713. The reversal of 22245231620 is 2613254222.

It can be written as a sum of positive squares in 4 ways, for example, as 884824516 + 21360407104 = 29746^2 + 146152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889007 + ... + 913686.

It is an arithmetic number, because the mean of its divisors is an integer number (1949613561).

Almost surely, 2^22245231620 is an apocalyptic number.

22245231620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22245231620 is an abundant number, since it is smaller than the sum of its proper divisors (24545493844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22245231620 is a wasteful number, since it uses less digits than its factorization.

22245231620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803319 (or 1803317 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 22245231620 its reverse (2613254222), we get a palindrome (24858485842).

The spelling of 22245231620 in words is "twenty-two billion, two hundred forty-five million, two hundred thirty-one thousand, six hundred twenty".