131141421121021 has 8 divisors (see below), whose sum is σ = 138901343729400. Its totient is φ = 123386578664448.

The previous prime is 131141421121013. The next prime is 131141421121027. The reversal of 131141421121021 is 120121124141131.

It can be written as a sum of positive squares in 4 ways, for example, as 81188839935225 + 49952581185796 = 9010485^2 + 7067714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131141421121021 - 2³ = 131141421121013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131141421121027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269984796 + ... + 1270088053.

It is an arithmetic number, because the mean of its divisors is an integer number (17362667966175).

Almost surely, 2^{131141421121021} is an apocalyptic number.

It is an amenable number.

131141421121021 is a deficient number, since it is larger than the sum of its proper divisors (7759922608379).

131141421121021 is a wasteful number, since it uses less digits than its factorization.

131141421121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540075903.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 131141421121021 its reverse (120121124141131), we get a palindrome (251262545262152).

The spelling of 131141421121021 in words is "one hundred thirty-one trillion, one hundred forty-one billion, four hundred twenty-one million, one hundred twenty-one thousand, twenty-one".