2122221222111 has 4 divisors (see below), whose sum is σ = 2829628296152. Its totient is φ = 1414814148072.

The previous prime is 2122221222083. The next prime is 2122221222127. The reversal of 2122221222111 is 1112221222212.

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

It is not a de Polignac number, because 2122221222111 - 2⁶ = 2122221222047 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 (2122221222151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353703537016 + ... + 353703537021.

It is an arithmetic number, because the mean of its divisors is an integer number (707407074038).

Almost surely, 2^{2122221222111} is an apocalyptic number.

2122221222111 is a deficient number, since it is larger than the sum of its proper divisors (707407074041).

2122221222111 is an equidigital number, since it uses as much as digits as its factorization.

2122221222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707407074040.

The product of its digits is 256, while the sum is 21.

Adding to 2122221222111 its reverse (1112221222212), we get a palindrome (3234442444323).

The spelling of 2122221222111 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".