2133155121 has 16 divisors (see below), whose sum is σ = 3012920064. Its totient is φ = 1337825024.

The previous prime is 2133155107. The next prime is 2133155161. The reversal of 2133155121 is 1215513312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133155121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2133155091 and 2133155100.

It is not an unprimeable number, because it can be changed into a prime (2133155161) 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, 116251 + ... + 133343.

It is an arithmetic number, because the mean of its divisors is an integer number (188307504).

Almost surely, 2^2133155121 is an apocalyptic number.

It is an amenable number.

2133155121 is a deficient number, since it is larger than the sum of its proper divisors (879764943).

2133155121 is a wasteful number, since it uses less digits than its factorization.

2133155121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19560.

The product of its digits is 900, while the sum is 24.

The square root of 2133155121 is about 46186.0922897792. The cubic root of 2133155121 is about 1287.2833322018.

Adding to 2133155121 its reverse (1215513312), we get a palindrome (3348668433).

The spelling of 2133155121 in words is "two billion, one hundred thirty-three million, one hundred fifty-five thousand, one hundred twenty-one".