12313221222 has 8 divisors (see below), whose sum is σ = 24626442456. Its totient is φ = 4104407072.

The previous prime is 12313221203. The next prime is 12313221223. The reversal of 12313221222 is 22212231321.

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

12313221222 is an admirable number.

It is a super-2 number, since 2×12313221222² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313221223) 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, 1026101763 + ... + 1026101774.

It is an arithmetic number, because the mean of its divisors is an integer number (3078305307).

Almost surely, 2^12313221222 is an apocalyptic number.

12313221222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12313221222 is a wasteful number, since it uses less digits than its factorization.

12313221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052203542.

The product of its digits is 576, while the sum is 21.

Adding to 12313221222 its reverse (22212231321), we get a palindrome (34525452543).

The spelling of 12313221222 in words is "twelve billion, three hundred thirteen million, two hundred twenty-one thousand, two hundred twenty-two".