12130021331 has 8 divisors (see below), whose sum is σ = 12387587904. Its totient is φ = 11873517760.

The previous prime is 12130021327. The next prime is 12130021361. The reversal of 12130021331 is 13312003121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12130021331 - 2² = 12130021327 is a prime.

It is a super-2 number, since 2×12130021331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130021361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242666 + ... + 288351.

It is an arithmetic number, because the mean of its divisors is an integer number (1548448488).

Almost surely, 2^12130021331 is an apocalyptic number.

12130021331 is a deficient number, since it is larger than the sum of its proper divisors (257566573).

12130021331 is an equidigital number, since it uses as much as digits as its factorization.

12130021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531501.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12130021331 its reverse (13312003121), we get a palindrome (25442024452).

The spelling of 12130021331 in words is "twelve billion, one hundred thirty million, twenty-one thousand, three hundred thirty-one".