12110131021 has 4 divisors (see below), whose sum is σ = 12110724000. Its totient is φ = 12109538044.

The previous prime is 12110131001. The next prime is 12110131027. The reversal of 12110131021 is 12013101121.

It is a happy number.

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 12110131021 - 2²³ = 12101742413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110130992 and 12110131010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110131027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264721 + ... + 307078.

It is an arithmetic number, because the mean of its divisors is an integer number (3027681000).

Almost surely, 2^12110131021 is an apocalyptic number.

It is an amenable number.

12110131021 is a deficient number, since it is larger than the sum of its proper divisors (592979).

12110131021 is an equidigital number, since it uses as much as digits as its factorization.

12110131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592978.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12110131021 its reverse (12013101121), we get a palindrome (24123232142).

The spelling of 12110131021 in words is "twelve billion, one hundred ten million, one hundred thirty-one thousand, twenty-one".