22131135460 has 48 divisors (see below), whose sum is σ = 53602053120. Its totient is φ = 7518199680.

The previous prime is 22131135437. The next prime is 22131135491. The reversal of 22131135460 is 6453113122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709876 + ... + 740395.

It is an arithmetic number, because the mean of its divisors is an integer number (1116709440).

Almost surely, 2^22131135460 is an apocalyptic number.

22131135460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131135460 is an abundant number, since it is smaller than the sum of its proper divisors (31470917660).

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

22131135460 is a wasteful number, since it uses less digits than its factorization.

22131135460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450396 (or 1450394 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 22131135460 its reverse (6453113122), we get a palindrome (28584248582).

The spelling of 22131135460 in words is "twenty-two billion, one hundred thirty-one million, one hundred thirty-five thousand, four hundred sixty".