22021312230 has 24 divisors (see below), whose sum is σ = 57255412032. Its totient is φ = 5872349904.

The previous prime is 22021312223. The next prime is 22021312249. The reversal of 22021312230 is 3221312022.

22021312230 is a `hidden beast` number, since 220 + 213 + 1 + 2 + 230 = 666.

It is a super-2 number, since 2×22021312230² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122340534 + ... + 122340713.

It is an arithmetic number, because the mean of its divisors is an integer number (2385642168).

Almost surely, 2^22021312230 is an apocalyptic number.

22021312230 is an abundant number, since it is smaller than the sum of its proper divisors (35234099802).

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

22021312230 is a wasteful number, since it uses less digits than its factorization.

22021312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244681260 (or 244681257 counting only the distinct ones).

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

Adding to 22021312230 its reverse (3221312022), we get a palindrome (25242624252).

The spelling of 22021312230 in words is "twenty-two billion, twenty-one million, three hundred twelve thousand, two hundred thirty".