2133810081 has 32 divisors (see below), whose sum is σ = 3414320000. Its totient is φ = 1309276224.

The previous prime is 2133810023. The next prime is 2133810121. The reversal of 2133810081 is 1800183312.

It is not a de Polignac number, because 2133810081 - 2⁹ = 2133809569 is a prime.

It is a super-2 number, since 2×2133810081² = 9106290923554453122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2133810781) 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, 113790 + ... + 131208.

It is an arithmetic number, because the mean of its divisors is an integer number (106697500).

Almost surely, 2^2133810081 is an apocalyptic number.

It is an amenable number.

2133810081 is a deficient number, since it is larger than the sum of its proper divisors (1280509919).

2133810081 is a wasteful number, since it uses less digits than its factorization.

2133810081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17790 (or 17784 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2133810081 is about 46193.1821917477. The cubic root of 2133810081 is about 1287.4150670840.

Adding to 2133810081 its reverse (1800183312), we get a palindrome (3933993393).

The spelling of 2133810081 in words is "two billion, one hundred thirty-three million, eight hundred ten thousand, eighty-one".