12313322221 has 8 divisors (see below), whose sum is σ = 12386480184. Its totient is φ = 12240261120.

The previous prime is 12313322141. The next prime is 12313322227. The reversal of 12313322221 is 12222331321.

It can be written as a sum of positive squares in 4 ways, for example, as 625550121 + 11687772100 = 25011^2 + 108110^2 .

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 12313322221 - 2¹⁹ = 12312797933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12313322192 and 12313322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313322227) 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, 239235 + ... + 286111.

It is an arithmetic number, because the mean of its divisors is an integer number (1548310023).

Almost surely, 2^12313322221 is an apocalyptic number.

It is an amenable number.

12313322221 is a deficient number, since it is larger than the sum of its proper divisors (73157963).

12313322221 is a wasteful number, since it uses less digits than its factorization.

12313322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48431.

The product of its digits is 864, while the sum is 22.

Adding to 12313322221 its reverse (12222331321), we get a palindrome (24535653542).

The spelling of 12313322221 in words is "twelve billion, three hundred thirteen million, three hundred twenty-two thousand, two hundred twenty-one".