131132001220421 has 16 divisors (see below), whose sum is σ = 149718029045760. Its totient is φ = 114070879249920.

The previous prime is 131132001220403. The next prime is 131132001220537. The reversal of 131132001220421 is 124022100231131.

It is a cyclic number.

It is not a de Polignac number, because 131132001220421 - 2¹⁴ = 131132001204037 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 (131132001220321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4950979781 + ... + 4951006266.

It is an arithmetic number, because the mean of its divisors is an integer number (9357376815360).

Almost surely, 2^{131132001220421} is an apocalyptic number.

It is an amenable number.

131132001220421 is a deficient number, since it is larger than the sum of its proper divisors (18586027825339).

131132001220421 is a wasteful number, since it uses less digits than its factorization.

131132001220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9901986124.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131132001220421 its reverse (124022100231131), we get a palindrome (255154101451552).

The spelling of 131132001220421 in words is "one hundred thirty-one trillion, one hundred thirty-two billion, one million, two hundred twenty thousand, four hundred twenty-one".