2112123023 has 4 divisors (see below), whose sum is σ = 2119331928. Its totient is φ = 2104914120.

The previous prime is 2112123001. The next prime is 2112123029. The reversal of 2112123023 is 3203212112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112123023 - 2⁸ = 2112122767 is a prime.

It is a super-2 number, since 2×2112123023² = 8922127328573317058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112122992 and 2112123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112123029) 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, 3604013 + ... + 3604598.

It is an arithmetic number, because the mean of its divisors is an integer number (529832982).

Almost surely, 2^2112123023 is an apocalyptic number.

2112123023 is a deficient number, since it is larger than the sum of its proper divisors (7208905).

2112123023 is an equidigital number, since it uses as much as digits as its factorization.

2112123023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208904.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2112123023 is about 45957.8396250302. The cubic root of 2112123023 is about 1283.0386431621.

Adding to 2112123023 its reverse (3203212112), we get a palindrome (5315335135).

It can be divided in two parts, 21121 and 23023, that added together give a palindrome (44144).

The spelling of 2112123023 in words is "two billion, one hundred twelve million, one hundred twenty-three thousand, twenty-three".