12010231021 has 4 divisors (see below), whose sum is σ = 12023772192. Its totient is φ = 11996689852.

The previous prime is 12010231007. The next prime is 12010231027. The reversal of 12010231021 is 12013201021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12013201021 = 96497 ⋅124493.

It is a cyclic number.

It is not a de Polignac number, because 12010231021 - 2⁵ = 12010230989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010230992 and 12010231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010231027) 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, 6769255 + ... + 6771028.

It is an arithmetic number, because the mean of its divisors is an integer number (3005943048).

Almost surely, 2^12010231021 is an apocalyptic number.

It is an amenable number.

12010231021 is a deficient number, since it is larger than the sum of its proper divisors (13541171).

12010231021 is an equidigital number, since it uses as much as digits as its factorization.

12010231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13541170.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12010231021 its reverse (12013201021), we get a palindrome (24023432042).

The spelling of 12010231021 in words is "twelve billion, ten million, two hundred thirty-one thousand, twenty-one".