131012221331421 has 12 divisors (see below), whose sum is σ = 191635316716480. Its totient is φ = 86235892521480.

The previous prime is 131012221331417. The next prime is 131012221331423. The reversal of 131012221331421 is 124133122210131.

131012221331421 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 1 + 22 + 213 + 3 + 1 + 421 = 666.

It is not a de Polignac number, because 131012221331421 - 2² = 131012221331417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012221331423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92132363095 + ... + 92132364516.

Almost surely, 2^{131012221331421} is an apocalyptic number.

It is an amenable number.

131012221331421 is a deficient number, since it is larger than the sum of its proper divisors (60623095385059).

131012221331421 is a wasteful number, since it uses less digits than its factorization.

131012221331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184264727696 (or 184264727693 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 131012221331421 its reverse (124133122210131), we get a palindrome (255145343541552).

The spelling of 131012221331421 in words is "one hundred thirty-one trillion, twelve billion, two hundred twenty-one million, three hundred thirty-one thousand, four hundred twenty-one".