12111313321 has 4 divisors (see below), whose sum is σ = 12114522000. Its totient is φ = 12108104644.

The previous prime is 12111313301. The next prime is 12111313351. The reversal of 12111313321 is 12331311121.

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 12111313321 - 2¹⁵ = 12111280553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111313301) 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, 1598671 + ... + 1606228.

It is an arithmetic number, because the mean of its divisors is an integer number (3028630500).

Almost surely, 2^12111313321 is an apocalyptic number.

It is an amenable number.

12111313321 is a deficient number, since it is larger than the sum of its proper divisors (3208679).

12111313321 is an equidigital number, since it uses as much as digits as its factorization.

12111313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208678.

The product of its digits is 108, while the sum is 19.

Adding to 12111313321 its reverse (12331311121), we get a palindrome (24442624442).

The spelling of 12111313321 in words is "twelve billion, one hundred eleven million, three hundred thirteen thousand, three hundred twenty-one".