2113221133 has 4 divisors (see below), whose sum is σ = 2113314268. Its totient is φ = 2113128000.

The previous prime is 2113221127. The next prime is 2113221151. The reversal of 2113221133 is 3311223112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1372183849 + 741037284 = 37043^2 + 27222^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113221133 - 2²¹ = 2111123981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2113221133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113221433) 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, 12133 + ... + 66133.

It is an arithmetic number, because the mean of its divisors is an integer number (528328567).

Almost surely, 2^2113221133 is an apocalyptic number.

It is an amenable number.

2113221133 is a deficient number, since it is larger than the sum of its proper divisors (93135).

2113221133 is an equidigital number, since it uses as much as digits as its factorization.

2113221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93134.

The product of its digits is 216, while the sum is 19.

The square root of 2113221133 is about 45969.7850005849. The cubic root of 2113221133 is about 1283.2609587265.

Adding to 2113221133 its reverse (3311223112), we get a palindrome (5424444245).

The spelling of 2113221133 in words is "two billion, one hundred thirteen million, two hundred twenty-one thousand, one hundred thirty-three".