12213122223312 has 60 divisors (see below), whose sum is σ = 34181242931940. Its totient is φ = 4070866443264.

The previous prime is 12213122223283. The next prime is 12213122223361. The reversal of 12213122223312 is 21332222131221.

12213122223312 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 3 + 122 + 223 + 312 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9775102298256 + 2438019925056 = 3126516^2 + 1561416^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1581448 + ... + 5189144.

It is an arithmetic number, because the mean of its divisors is an integer number (569687382199).

Almost surely, 2^{12213122223312} is an apocalyptic number.

12213122223312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213122223312 is an abundant number, since it is smaller than the sum of its proper divisors (21968120708628).

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

12213122223312 is a wasteful number, since it uses less digits than its factorization.

12213122223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631220 (or 3631211 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 12213122223312 its reverse (21332222131221), we get a palindrome (33545344354533).

The spelling of 12213122223312 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-two million, two hundred twenty-three thousand, three hundred twelve".