2123122112 has 56 divisors (see below), whose sum is σ = 4467447504. Its totient is φ = 997650432.

The previous prime is 2123122097. The next prime is 2123122181. The reversal of 2123122112 is 2112213212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214423 + ... + 1216169.

Almost surely, 2^2123122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2233723752).

2123122112 is an abundant number, since it is smaller than the sum of its proper divisors (2344325392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123122112 is a wasteful number, since it uses less digits than its factorization.

2123122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893 (or 2883 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2123122112 is about 46077.3492293122. The cubic root of 2123122112 is about 1285.2619716507.

Adding to 2123122112 its reverse (2112213212), we get a palindrome (4235335324).

The spelling of 2123122112 in words is "two billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twelve".