2111222122111 has 8 divisors (see below), whose sum is σ = 2120183875440. Its totient is φ = 2102278905408.

The previous prime is 2111222122109. The next prime is 2111222122123. The reversal of 2111222122111 is 1112212221112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111222122111 - 2¹ = 2111222122109 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 (2111222122511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405861 + ... + 4861486.

It is an arithmetic number, because the mean of its divisors is an integer number (265022984430).

Almost surely, 2^{2111222122111} is an apocalyptic number.

2111222122111 is a deficient number, since it is larger than the sum of its proper divisors (8961753329).

2111222122111 is an equidigital number, since it uses as much as digits as its factorization.

2111222122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268313.

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

Adding to 2111222122111 its reverse (1112212221112), we get a palindrome (3223434343223).

Subtracting from 2111222122111 its reverse (1112212221112), we obtain a palindrome (999009900999).

The spelling of 2111222122111 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".