21022330132 has 12 divisors (see below), whose sum is σ = 38725345120. Its totient is φ = 9957945816.

The previous prime is 21022330123. The next prime is 21022330139. The reversal of 21022330132 is 23103322012.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022330139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138304728 + ... + 138304879.

Almost surely, 2^21022330132 is an apocalyptic number.

It is an amenable number.

21022330132 is a deficient number, since it is larger than the sum of its proper divisors (17703014988).

21022330132 is a wasteful number, since it uses less digits than its factorization.

21022330132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276609630 (or 276609628 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21022330132 its reverse (23103322012), we get a palindrome (44125652144).

The spelling of 21022330132 in words is "twenty-one billion, twenty-two million, three hundred thirty thousand, one hundred thirty-two".