1112222212111 has 4 divisors (see below), whose sum is σ = 1116237455032. Its totient is φ = 1108206969192.

The previous prime is 1112222212099. The next prime is 1112222212133. The reversal of 1112222212111 is 1112122222111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112222212111 - 2²⁹ = 1111685341199 is a prime.

It is a super-2 number, since 2×1112222212111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112222210111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007621045 + ... + 2007621598.

It is an arithmetic number, because the mean of its divisors is an integer number (279059363758).

Almost surely, 2^{1112222212111} is an apocalyptic number.

1112222212111 is a deficient number, since it is larger than the sum of its proper divisors (4015242921).

1112222212111 is an equidigital number, since it uses as much as digits as its factorization.

1112222212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015242920.

The product of its digits is 64, while the sum is 19.

Adding to 1112222212111 its reverse (1112122222111), we get a palindrome (2224344434222).

The spelling of 1112222212111 in words is "one trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".