22130132644 has 9 divisors (see below), whose sum is σ = 38728252801. Its totient is φ = 11064917560.

The previous prime is 22130132623. The next prime is 22130132681. The reversal of 22130132644 is 44623103122.

It is a happy number.

The square root of 22130132644 is 148762.

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

It can be written as a sum of positive squares in only one way, i.e., 10249132644 + 11881000000 = 101238^2 + 109000^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 260334 + ... + 334714.

Almost surely, 2^22130132644 is an apocalyptic number.

22130132644 is the 148762-nd square number.

It is an amenable number.

22130132644 is a deficient number, since it is larger than the sum of its proper divisors (16598120157).

22130132644 is an frugal number, since it uses more digits than its factorization.

22130132644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148766 (or 74383 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 22130132644 its reverse (44623103122), we get a palindrome (66753235766).

The spelling of 22130132644 in words is "twenty-two billion, one hundred thirty million, one hundred thirty-two thousand, six hundred forty-four".