2113234221 has 24 divisors (see below), whose sum is σ = 3281184480. Its totient is φ = 1206267552.

The previous prime is 2113234219. The next prime is 2113234231. The reversal of 2113234221 is 1224323112.

It is not a de Polignac number, because 2113234221 - 2¹ = 2113234219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113234231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139350 + ... + 153768.

It is an arithmetic number, because the mean of its divisors is an integer number (136716020).

Almost surely, 2^2113234221 is an apocalyptic number.

2113234221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2113234221 is a deficient number, since it is larger than the sum of its proper divisors (1167950259).

2113234221 is a wasteful number, since it uses less digits than its factorization.

2113234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15433 (or 15426 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 2113234221 is about 45969.9273547392. The cubic root of 2113234221 is about 1283.2636079657.

Adding to 2113234221 its reverse (1224323112), we get a palindrome (3337557333).

The spelling of 2113234221 in words is "two billion, one hundred thirteen million, two hundred thirty-four thousand, two hundred twenty-one".