20221131211100 has 36 divisors (see below), whose sum is σ = 44149056326424. Its totient is φ = 8038830070080.

The previous prime is 20221131211093. The next prime is 20221131211111. The reversal of 20221131211100 is 111213112202.

It is a happy number.

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, 620263799 + ... + 620296398.

It is an arithmetic number, because the mean of its divisors is an integer number (1226362675734).

Almost surely, 2^{20221131211100} is an apocalyptic number.

20221131211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221131211100 is an abundant number, since it is smaller than the sum of its proper divisors (23927925115324).

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

20221131211100 is a wasteful number, since it uses less digits than its factorization.

20221131211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240560374 (or 1240560367 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20221131211100 its reverse (111213112202), we get a palindrome (20332344323302).

The spelling of 20221131211100 in words is "twenty trillion, two hundred twenty-one billion, one hundred thirty-one million, two hundred eleven thousand, one hundred".