2133130121 has 4 divisors (see below), whose sum is σ = 2164967952. Its totient is φ = 2101292292.

The previous prime is 2133130117. The next prime is 2133130127. The reversal of 2133130121 is 1210313312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2133130121 - 2² = 2133130117 is a prime.

It is a super-2 number, since 2×2133130121² = 9100488226234949282, which contains 22 as substring.

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 2133130121.

It is not an unprimeable number, because it can be changed into a prime (2133130127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15918815 + ... + 15918948.

It is an arithmetic number, because the mean of its divisors is an integer number (541241988).

Almost surely, 2^2133130121 is an apocalyptic number.

It is an amenable number.

2133130121 is a deficient number, since it is larger than the sum of its proper divisors (31837831).

2133130121 is an equidigital number, since it uses as much as digits as its factorization.

2133130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31837830.

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

The square root of 2133130121 is about 46185.8216447429. The cubic root of 2133130121 is about 1287.2783033115.

Adding to 2133130121 its reverse (1210313312), we get a palindrome (3343443433).

The spelling of 2133130121 in words is "two billion, one hundred thirty-three million, one hundred thirty thousand, one hundred twenty-one".