10021112131231 has 4 divisors (see below), whose sum is σ = 10158387639952. Its totient is φ = 9883836622512.

The previous prime is 10021112131159. The next prime is 10021112131259. The reversal of 10021112131231 is 13213121112001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021112131231 - 2²³ = 10021103742623 is a prime.

It is a super-2 number, since 2×10021112131231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021112131199 and 10021112131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021112131831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68637754251 + ... + 68637754396.

It is an arithmetic number, because the mean of its divisors is an integer number (2539596909988).

Almost surely, 2^{10021112131231} is an apocalyptic number.

10021112131231 is a deficient number, since it is larger than the sum of its proper divisors (137275508721).

10021112131231 is an equidigital number, since it uses as much as digits as its factorization.

10021112131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137275508720.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 10021112131231 its reverse (13213121112001), we get a palindrome (23234233243232).

The spelling of 10021112131231 in words is "ten trillion, twenty-one billion, one hundred twelve million, one hundred thirty-one thousand, two hundred thirty-one".