12222100212111 has 12 divisors (see below), whose sum is σ = 17705021253192. Its totient is φ = 8124585345456.

The previous prime is 12222100212067. The next prime is 12222100212169. The reversal of 12222100212111 is 11121200122221.

12222100212111 is a `hidden beast` number, since 1 + 222 + 210 + 0 + 21 + 211 + 1 = 666.

It is not a de Polignac number, because 12222100212111 - 2¹⁸ = 12222099949967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222100214111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1956785256 + ... + 1956791501.

It is an arithmetic number, because the mean of its divisors is an integer number (1475418437766).

Almost surely, 2^{12222100212111} is an apocalyptic number.

12222100212111 is a deficient number, since it is larger than the sum of its proper divisors (5482921041081).

12222100212111 is a wasteful number, since it uses less digits than its factorization.

12222100212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913577110 (or 3913577107 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12222100212111 its reverse (11121200122221), we get a palindrome (23343300334332).

The spelling of 12222100212111 in words is "twelve trillion, two hundred twenty-two billion, one hundred million, two hundred twelve thousand, one hundred eleven".