131201421041421 has 20 divisors (see below), whose sum is σ = 195994517914492. Its totient is φ = 87466600225728.

The previous prime is 131201421041419. The next prime is 131201421041447. The reversal of 131201421041421 is 124140124102131.

131201421041421 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 14 + 210 + 414 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75183830481321 + 56017590560100 = 8670861^2 + 7484490^2 .

It is not a de Polignac number, because 131201421041421 - 2¹ = 131201421041419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201421041321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2322880 + ... + 16364553.

Almost surely, 2^{131201421041421} is an apocalyptic number.

It is an amenable number.

131201421041421 is a deficient number, since it is larger than the sum of its proper divisors (64793096873071).

131201421041421 is an equidigital number, since it uses as much as digits as its factorization.

131201421041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18774122 (or 18774113 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 131201421041421 its reverse (124140124102131), we get a palindrome (255341545143552).

The spelling of 131201421041421 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty-one million, forty-one thousand, four hundred twenty-one".