131221010204112 has 20 divisors (see below), whose sum is σ = 338987609694080. Its totient is φ = 43740336734688.

The previous prime is 131221010204107. The next prime is 131221010204153. The reversal of 131221010204112 is 211402010122131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366885522912 + ... + 1366885523007.

It is an arithmetic number, because the mean of its divisors is an integer number (16949380484704).

Almost surely, 2^{131221010204112} is an apocalyptic number.

131221010204112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131221010204112 is an abundant number, since it is smaller than the sum of its proper divisors (207766599489968).

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

131221010204112 is a wasteful number, since it uses less digits than its factorization.

131221010204112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733771045930 (or 2733771045924 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 131221010204112 its reverse (211402010122131), we get a palindrome (342623020326243).

The spelling of 131221010204112 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, ten million, two hundred four thousand, one hundred twelve".