21022301232 has 60 divisors (see below), whose sum is σ = 59353939944. Its totient is φ = 6945415680.

The previous prime is 21022301227. The next prime is 21022301239. The reversal of 21022301232 is 23210322012.

21022301232 is a `hidden beast` number, since 210 + 223 + 0 + 1 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21022301239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629694 + ... + 662237.

Almost surely, 2^21022301232 is an apocalyptic number.

It is an amenable number.

21022301232 is an abundant number, since it is smaller than the sum of its proper divisors (38331638712).

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

21022301232 is a wasteful number, since it uses less digits than its factorization.

21022301232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292058 (or 1292049 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21022301232 its reverse (23210322012), we get a palindrome (44232623244).

The spelling of 21022301232 in words is "twenty-one billion, twenty-two million, three hundred one thousand, two hundred thirty-two".