21023222130 has 48 divisors (see below), whose sum is σ = 54761540184. Its totient is φ = 5595816960.

The previous prime is 21023222113. The next prime is 21023222147. The reversal of 21023222130 is 3122232012.

21023222130 is a `hidden beast` number, since 210 + 2 + 322 + 2 + 130 = 666.

It is an interprime number because it is at equal distance from previous prime (21023222113) and next prime (21023222147).

It can be written as a sum of positive squares in 4 ways, for example, as 9406478169 + 11616743961 = 96987^2 + 107781^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167199 + ... + 264578.

Almost surely, 2^21023222130 is an apocalyptic number.

21023222130 is an abundant number, since it is smaller than the sum of its proper divisors (33738318054).

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

21023222130 is a wasteful number, since it uses less digits than its factorization.

21023222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432331 (or 432328 counting only the distinct ones).

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

Adding to 21023222130 its reverse (3122232012), we get a palindrome (24145454142).

The spelling of 21023222130 in words is "twenty-one billion, twenty-three million, two hundred twenty-two thousand, one hundred thirty".