20220231172 has 24 divisors (see below), whose sum is σ = 36056820800. Its totient is φ = 9920084256.

The previous prime is 20220231133. The next prime is 20220231173. The reversal of 20220231172 is 27113202202.

It is not an unprimeable number, because it can be changed into a prime (20220231173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180222 + ... + 270037.

Almost surely, 2^20220231172 is an apocalyptic number.

It is an amenable number.

20220231172 is a deficient number, since it is larger than the sum of its proper divisors (15836589628).

20220231172 is a wasteful number, since it uses less digits than its factorization.

20220231172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450475 (or 450473 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 20220231172 its reverse (27113202202), we get a palindrome (47333433374).

The spelling of 20220231172 in words is "twenty billion, two hundred twenty million, two hundred thirty-one thousand, one hundred seventy-two".