222100121111 has 12 divisors (see below), whose sum is σ = 244417664400. Its totient is φ = 201668454240.

The previous prime is 222100121107. The next prime is 222100121179. The reversal of 222100121111 is 111121001222.

It is not a de Polignac number, because 222100121111 - 2² = 222100121107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222100120111) 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, 992366 + ... + 1195403.

It is an arithmetic number, because the mean of its divisors is an integer number (20368138700).

Almost surely, 2^222100121111 is an apocalyptic number.

222100121111 is a deficient number, since it is larger than the sum of its proper divisors (22317543289).

222100121111 is a wasteful number, since it uses less digits than its factorization.

222100121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188630 (or 2188619 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 222100121111 its reverse (111121001222), we get a palindrome (333221122333).

It can be divided in two parts, 2221001211 and 11, that added together give a palindrome (2221001222).

The spelling of 222100121111 in words is "two hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, one hundred eleven".