2133011111 has 36 divisors (see below), whose sum is σ = 2740986360. Its totient is φ = 1653775200.

The previous prime is 2133011093. The next prime is 2133011123. The reversal of 2133011111 is 1111103312.

It is a happy number.

It is not a de Polignac number, because 2133011111 - 2²⁶ = 2065902247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133011171) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1356956 + ... + 1358526.

It is an arithmetic number, because the mean of its divisors is an integer number (76138510).

Almost surely, 2^2133011111 is an apocalyptic number.

2133011111 is a deficient number, since it is larger than the sum of its proper divisors (607975249).

2133011111 is a wasteful number, since it uses less digits than its factorization.

2133011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2133011111 is about 46184.5332443666. The cubic root of 2133011111 is about 1287.2543632436.

Adding to 2133011111 its reverse (1111103312), we get a palindrome (3244114423).

It can be divided in two parts, 213301 and 1111, that added together give a palindrome (214412).

The spelling of 2133011111 in words is "two billion, one hundred thirty-three million, eleven thousand, one hundred eleven".