2111133133 has 4 divisors (see below), whose sum is σ = 2134853820. Its totient is φ = 2087412448.

The previous prime is 2111133109. The next prime is 2111133163. The reversal of 2111133133 is 3313311112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 346965129 + 1764168004 = 18627^2 + 42002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111133133 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 2111133133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111133163) 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, 11860210 + ... + 11860387.

It is an arithmetic number, because the mean of its divisors is an integer number (533713455).

Almost surely, 2^2111133133 is an apocalyptic number.

It is an amenable number.

2111133133 is a deficient number, since it is larger than the sum of its proper divisors (23720687).

2111133133 is an equidigital number, since it uses as much as digits as its factorization.

2111133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720686.

The product of its digits is 162, while the sum is 19.

The square root of 2111133133 is about 45947.0688183697. The cubic root of 2111133133 is about 1282.8381710029.

Adding to 2111133133 its reverse (3313311112), we get a palindrome (5424444245).

The spelling of 2111133133 in words is "two billion, one hundred eleven million, one hundred thirty-three thousand, one hundred thirty-three".