22131303860 has 24 divisors (see below), whose sum is σ = 47237638056. Its totient is φ = 8707397760.

The previous prime is 22131303847. The next prime is 22131303877. The reversal of 22131303860 is 6830313122.

It can be written as a sum of positive squares in 4 ways, for example, as 29724304 + 22101579556 = 5452^2 + 148666^2 .

It is a super-2 number, since 2×22131303860² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 9068987 + ... + 9071426.

It is an arithmetic number, because the mean of its divisors is an integer number (1968234919).

Almost surely, 2^22131303860 is an apocalyptic number.

22131303860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131303860 is an abundant number, since it is smaller than the sum of its proper divisors (25106334196).

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

22131303860 is a wasteful number, since it uses less digits than its factorization.

22131303860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140483 (or 18140481 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 22131303860 its reverse (6830313122), we get a palindrome (28961616982).

The spelling of 22131303860 in words is "twenty-two billion, one hundred thirty-one million, three hundred three thousand, eight hundred sixty".