12213123232311 has 16 divisors (see below), whose sum is σ = 18093613181920. Its totient is φ = 8142038377920.

The previous prime is 12213123232231. The next prime is 12213123232313. The reversal of 12213123232311 is 11323232131221.

12213123232311 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 312 + 3 + 2 + 32 + 311 = 666.

It is not a de Polignac number, because 12213123232311 - 2³⁸ = 11938245325367 is a prime.

It is a super-2 number, since 2×12213123232311² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213123232313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4364301 + ... + 6593433.

It is an arithmetic number, because the mean of its divisors is an integer number (1130850823870).

Almost surely, 2^{12213123232311} is an apocalyptic number.

12213123232311 is a deficient number, since it is larger than the sum of its proper divisors (5880489949609).

12213123232311 is a wasteful number, since it uses less digits than its factorization.

12213123232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432063 (or 2432057 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 12213123232311 its reverse (11323232131221), we get a palindrome (23536355363532).

The spelling of 12213123232311 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred eleven".