12130011021 has 4 divisors (see below), whose sum is σ = 16173348032. Its totient is φ = 8086674012.

The previous prime is 12130010983. The next prime is 12130011041. The reversal of 12130011021 is 12011003121.

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 not a de Polignac number, because 12130011021 - 2⁹ = 12130010509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12130010988 and 12130011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130011041) 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, 2021668501 + ... + 2021668506.

It is an arithmetic number, because the mean of its divisors is an integer number (4043337008).

Almost surely, 2^12130011021 is an apocalyptic number.

It is an amenable number.

12130011021 is a deficient number, since it is larger than the sum of its proper divisors (4043337011).

12130011021 is an equidigital number, since it uses as much as digits as its factorization.

12130011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043337010.

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

Adding to 12130011021 its reverse (12011003121), we get a palindrome (24141014142).

The spelling of 12130011021 in words is "twelve billion, one hundred thirty million, eleven thousand, twenty-one".