12313112221 has 8 divisors (see below), whose sum is σ = 12654493280. Its totient is φ = 11974232592.

The previous prime is 12313112183. The next prime is 12313112327. The reversal of 12313112221 is 12221131321.

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 12313112221 - 2⁷ = 12313112093 is a prime.

It is a super-2 number, since 2×12313112221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313113221) 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, 615375 + ... + 635068.

It is an arithmetic number, because the mean of its divisors is an integer number (1581811660).

Almost surely, 2^12313112221 is an apocalyptic number.

It is an amenable number.

12313112221 is a deficient number, since it is larger than the sum of its proper divisors (341381059).

12313112221 is a wasteful number, since it uses less digits than its factorization.

12313112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250715.

The product of its digits is 144, while the sum is 19.

Adding to 12313112221 its reverse (12221131321), we get a palindrome (24534243542).

The spelling of 12313112221 in words is "twelve billion, three hundred thirteen million, one hundred twelve thousand, two hundred twenty-one".