2121310133 has 16 divisors (see below), whose sum is σ = 2278874880. Its totient is φ = 1967486976.

The previous prime is 2121310091. The next prime is 2121310153. The reversal of 2121310133 is 3310131212.

It is not a de Polignac number, because 2121310133 - 2⁶ = 2121310069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121310153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902666 + ... + 905012.

It is an arithmetic number, because the mean of its divisors is an integer number (142429680).

Almost surely, 2^2121310133 is an apocalyptic number.

It is an amenable number.

2121310133 is a deficient number, since it is larger than the sum of its proper divisors (157564747).

2121310133 is a wasteful number, since it uses less digits than its factorization.

2121310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2121310133 is about 46057.6826707554. The cubic root of 2121310133 is about 1284.8962318867.

Adding to 2121310133 its reverse (3310131212), we get a palindrome (5431441345).

The spelling of 2121310133 in words is "two billion, one hundred twenty-one million, three hundred ten thousand, one hundred thirty-three".