2123123133 has 16 divisors (see below), whose sum is σ = 2931524096. Its totient is φ = 1365361920.

The previous prime is 2123123063. The next prime is 2123123143. The reversal of 2123123133 is 3313213212.

It is not a de Polignac number, because 2123123133 - 2⁹ = 2123122621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123123143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7360 + ... + 65577.

It is an arithmetic number, because the mean of its divisors is an integer number (183220256).

Almost surely, 2^2123123133 is an apocalyptic number.

It is an amenable number.

2123123133 is a deficient number, since it is larger than the sum of its proper divisors (808400963).

2123123133 is a wasteful number, since it uses less digits than its factorization.

2123123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73284.

The product of its digits is 648, while the sum is 21.

The square root of 2123123133 is about 46077.3603085073. The cubic root of 2123123133 is about 1285.2621776762.

Adding to 2123123133 its reverse (3313213212), we get a palindrome (5436336345).

The spelling of 2123123133 in words is "two billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-three".