131012221402100 has 36 divisors (see below), whose sum is σ = 289660605745644. Its totient is φ = 51416117076480.

The previous prime is 131012221402079. The next prime is 131012221402177. The reversal of 131012221402100 is 1204122210131.

It can be written as a sum of positive squares in 6 ways, for example, as 4289380650724 + 126722840751376 = 2071082^2 + 11257124^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 12359638229 + ... + 12359648828.

It is an arithmetic number, because the mean of its divisors is an integer number (8046127937379).

Almost surely, 2^{131012221402100} is an apocalyptic number.

131012221402100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131012221402100 is an abundant number, since it is smaller than the sum of its proper divisors (158648384343544).

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

131012221402100 is a wasteful number, since it uses less digits than its factorization.

131012221402100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24719287124 (or 24719287117 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 131012221402100 its reverse (1204122210131), we get a palindrome (132216343612231).

The spelling of 131012221402100 in words is "one hundred thirty-one trillion, twelve billion, two hundred twenty-one million, four hundred two thousand, one hundred".