2123011113 has 16 divisors (see below), whose sum is σ = 3109217280. Its totient is φ = 1282550544.

The previous prime is 2123011109. The next prime is 2123011127. The reversal of 2123011113 is 3111103212.

It is a happy number.

It is not a de Polignac number, because 2123011113 - 2² = 2123011109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2123011092 and 2123011101.

It is not an unprimeable number, because it can be changed into a prime (2123011183) 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, 808381 + ... + 811002.

It is an arithmetic number, because the mean of its divisors is an integer number (194326080).

Almost surely, 2^2123011113 is an apocalyptic number.

2123011113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2123011113 is a deficient number, since it is larger than the sum of its proper divisors (986206167).

2123011113 is a wasteful number, since it uses less digits than its factorization.

2123011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619428.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2123011113 is about 46076.1447280477. The cubic root of 2123011113 is about 1285.2395729893.

Adding to 2123011113 its reverse (3111103212), we get a palindrome (5234114325).

The spelling of 2123011113 in words is "two billion, one hundred twenty-three million, eleven thousand, one hundred thirteen".