2112222123 has 48 divisors (see below), whose sum is σ = 3454577280. Its totient is φ = 1264910400.

The previous prime is 2112222113. The next prime is 2112222127. The reversal of 2112222123 is 3212222112.

It is not a de Polignac number, because 2112222123 - 2¹⁰ = 2112221099 is a prime.

It is a super-2 number, since 2×2112222123² = 8922964593781254258, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2112222096 and 2112222105.

It is not an unprimeable number, because it can be changed into a prime (2112222127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9065215 + ... + 9065447.

It is an arithmetic number, because the mean of its divisors is an integer number (71970360).

Almost surely, 2^2112222123 is an apocalyptic number.

2112222123 is a deficient number, since it is larger than the sum of its proper divisors (1342355157).

2112222123 is a wasteful number, since it uses less digits than its factorization.

2112222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 378 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2112222123 is about 45958.9177744646. The cubic root of 2112222123 is about 1283.0587094082.

Adding to 2112222123 its reverse (3212222112), we get a palindrome (5324444235).

The spelling of 2112222123 in words is "two billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-three".