20221131320 has 32 divisors (see below), whose sum is σ = 48997357920. Its totient is φ = 7466263680.

The previous prime is 20221131277. The next prime is 20221131323. The reversal of 20221131320 is 2313112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221131323) 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, 19442876 + ... + 19443915.

It is an arithmetic number, because the mean of its divisors is an integer number (1531167435).

Almost surely, 2^20221131320 is an apocalyptic number.

20221131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221131320 is an abundant number, since it is smaller than the sum of its proper divisors (28776226600).

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

20221131320 is a wasteful number, since it uses less digits than its factorization.

20221131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886815 (or 38886811 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20221131320 its reverse (2313112202), we get a palindrome (22534243522).

The spelling of 20221131320 in words is "twenty billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred twenty".