2133330121 has 4 divisors (see below), whose sum is σ = 2297432452. Its totient is φ = 1969227792.

The previous prime is 2133330107. The next prime is 2133330137. The reversal of 2133330121 is 1210333312.

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 1028100096 + 1105230025 = 32064^2 + 33245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133330121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133330191) 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, 82051146 + ... + 82051171.

It is an arithmetic number, because the mean of its divisors is an integer number (574358113).

Almost surely, 2^2133330121 is an apocalyptic number.

It is an amenable number.

2133330121 is a deficient number, since it is larger than the sum of its proper divisors (164102331).

2133330121 is a wasteful number, since it uses less digits than its factorization.

2133330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164102330.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2133330121 is about 46187.9867606286. The cubic root of 2133330121 is about 1287.3185333335.

Adding to 2133330121 its reverse (1210333312), we get a palindrome (3343663433).

The spelling of 2133330121 in words is "two billion, one hundred thirty-three million, three hundred thirty thousand, one hundred twenty-one".