2112122111 has 8 divisors (see below), whose sum is σ = 2305717248. Its totient is φ = 1918791000.

The previous prime is 2112122081. The next prime is 2112122119. The reversal of 2112122111 is 1112212112.

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 2112122111 - 2¹⁰ = 2112121087 is a prime.

It is a super-2 number, since 2×2112122111² = 8922119623550192642, which 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 (2112122119) 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, 49085 + ... + 81446.

It is an arithmetic number, because the mean of its divisors is an integer number (288214656).

Almost surely, 2^2112122111 is an apocalyptic number.

2112122111 is a deficient number, since it is larger than the sum of its proper divisors (193595137).

2112122111 is a wasteful number, since it uses less digits than its factorization.

2112122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132013.

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

The square root of 2112122111 is about 45957.8297028918. The cubic root of 2112122111 is about 1283.0384584930.

Adding to 2112122111 its reverse (1112212112), we get a palindrome (3224334223).

Subtracting from 2112122111 its reverse (1112212112), we obtain a palindrome (999909999).

The spelling of 2112122111 in words is "two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred eleven".