2123221113 has 32 divisors (see below), whose sum is σ = 3425587200. Its totient is φ = 1291897728.

The previous prime is 2123221097. The next prime is 2123221123. The reversal of 2123221113 is 3111223212.

It is not a de Polignac number, because 2123221113 - 2⁴ = 2123221097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123221123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2745 + ... + 65222.

It is an arithmetic number, because the mean of its divisors is an integer number (107049600).

Almost surely, 2^2123221113 is an apocalyptic number.

It is an amenable number.

2123221113 is a deficient number, since it is larger than the sum of its proper divisors (1302366087).

2123221113 is a wasteful number, since it uses less digits than its factorization.

2123221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68078 (or 68072 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2123221113 is about 46078.4235081887. The cubic root of 2123221113 is about 1285.2819485583.

Adding to 2123221113 its reverse (3111223212), we get a palindrome (5234444325).

The spelling of 2123221113 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred thirteen".