1222222100111 has 16 divisors (see below), whose sum is σ = 1273682340000. Its totient is φ = 1171385757696.

The previous prime is 1222222100087. The next prime is 1222222100123. The reversal of 1222222100111 is 1110012222221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222222100111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222222100111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222100171) 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, 26940695 + ... + 26986023.

It is an arithmetic number, because the mean of its divisors is an integer number (79605146250).

Almost surely, 2^{1222222100111} is an apocalyptic number.

1222222100111 is a deficient number, since it is larger than the sum of its proper divisors (51460239889).

1222222100111 is a wasteful number, since it uses less digits than its factorization.

1222222100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52186.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222222100111 its reverse (1110012222221), we get a palindrome (2332234322332).

The spelling of 1222222100111 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred thousand, one hundred eleven".