12222211221311 has 16 divisors (see below), whose sum is σ = 15095876027904. Its totient is φ = 9636150200544.

The previous prime is 12222211221271. The next prime is 12222211221377. The reversal of 12222211221311 is 11312211222221.

It is a de Polignac number, because none of the positive numbers 2^k-12222211221311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222211221211) 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, 237271091 + ... + 237322596.

It is an arithmetic number, because the mean of its divisors is an integer number (943492251744).

Almost surely, 2^{12222211221311} is an apocalyptic number.

12222211221311 is a deficient number, since it is larger than the sum of its proper divisors (2873664806593).

12222211221311 is a wasteful number, since it uses less digits than its factorization.

12222211221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474593990.

The product of its digits is 384, while the sum is 23.

Adding to 12222211221311 its reverse (11312211222221), we get a palindrome (23534422443532).

The spelling of 12222211221311 in words is "twelve trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, three hundred eleven".