131000042010021 has 16 divisors (see below), whose sum is σ = 183860497179840. Its totient is φ = 82736513544960.

The previous prime is 131000042009987. The next prime is 131000042010041. The reversal of 131000042010021 is 120010240000131.

It is not a de Polignac number, because 131000042010021 - 2¹⁴ = 131000041993637 is a prime.

It is a super-2 number, since 2×131000042010021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000042010041) 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, 8798061 + ... + 18422973.

It is an arithmetic number, because the mean of its divisors is an integer number (11491281073740).

Almost surely, 2^{131000042010021} is an apocalyptic number.

It is an amenable number.

131000042010021 is a deficient number, since it is larger than the sum of its proper divisors (52860455169819).

131000042010021 is a wasteful number, since it uses less digits than its factorization.

131000042010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9863716.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 131000042010021 its reverse (120010240000131), we get a palindrome (251010282010152).

The spelling of 131000042010021 in words is "one hundred thirty-one trillion, forty-two million, ten thousand, twenty-one".