21130232022 has 40 divisors (see below), whose sum is σ = 47366586432. Its totient is φ = 7040552400.

The previous prime is 21130231943. The next prime is 21130232027. The reversal of 21130232022 is 22023203112.

21130232022 is a `hidden beast` number, since 21 + 1 + 302 + 320 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21130231986 and 21130232004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130232027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 394572 + ... + 444912.

Almost surely, 2^21130232022 is an apocalyptic number.

21130232022 is an abundant number, since it is smaller than the sum of its proper divisors (26236354410).

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

21130232022 is a wasteful number, since it uses less digits than its factorization.

21130232022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52946 (or 52937 counting only the distinct ones).

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

Adding to 21130232022 its reverse (22023203112), we get a palindrome (43153435134).

The spelling of 21130232022 in words is "twenty-one billion, one hundred thirty million, two hundred thirty-two thousand, twenty-two".