2012012123 has 4 divisors (see below), whose sum is σ = 2194922328. Its totient is φ = 1829101920.

The previous prime is 2012012063. The next prime is 2012012153. The reversal of 2012012123 is 3212102102.

It is a happy number.

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 2012012123 - 2²⁰ = 2010963547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012012098 and 2012012107.

It is not an unprimeable number, because it can be changed into a prime (2012012153) 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, 91455086 + ... + 91455107.

It is an arithmetic number, because the mean of its divisors is an integer number (548730582).

Almost surely, 2^2012012123 is an apocalyptic number.

2012012123 is a deficient number, since it is larger than the sum of its proper divisors (182910205).

2012012123 is a wasteful number, since it uses less digits than its factorization.

2012012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182910204.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2012012123 is about 44855.4581182714. The cubic root of 2012012123 is about 1262.4384045759.

Adding to 2012012123 its reverse (3212102102), we get a palindrome (5224114225).

The spelling of 2012012123 in words is "two billion, twelve million, twelve thousand, one hundred twenty-three".