131001112101021 has 4 divisors (see below), whose sum is σ = 174668149468032. Its totient is φ = 87334074734012.

The previous prime is 131001112100983. The next prime is 131001112101049. The reversal of 131001112101021 is 120101211100131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131001112101021 - 2¹⁰ = 131001112099997 is a prime.

It is a super-2 number, since 2×131001112101021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001112101721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21833518683501 + ... + 21833518683506.

It is an arithmetic number, because the mean of its divisors is an integer number (43667037367008).

Almost surely, 2^{131001112101021} is an apocalyptic number.

It is an amenable number.

131001112101021 is a deficient number, since it is larger than the sum of its proper divisors (43667037367011).

131001112101021 is an equidigital number, since it uses as much as digits as its factorization.

131001112101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43667037367010.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 131001112101021 its reverse (120101211100131), we get a palindrome (251102323201152).

The spelling of 131001112101021 in words is "one hundred thirty-one trillion, one billion, one hundred twelve million, one hundred one thousand, twenty-one".