131223204022100 has 72 divisors (see below), whose sum is σ = 307919600634240. Its totient is φ = 48350577272320.

The previous prime is 131223204022091. The next prime is 131223204022121. The reversal of 131223204022100 is 1220402322131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 821091590 + ... + 821251389.

It is an arithmetic number, because the mean of its divisors is an integer number (4276661119920).

Almost surely, 2^{131223204022100} is an apocalyptic number.

131223204022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223204022100 is an abundant number, since it is smaller than the sum of its proper divisors (176696396612140).

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

131223204022100 is a wasteful number, since it uses less digits than its factorization.

131223204022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642343057 (or 1642343050 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 131223204022100 its reverse (1220402322131), we get a palindrome (132443606344231).

The spelling of 131223204022100 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, two hundred four million, twenty-two thousand, one hundred".