2133231121 has 12 divisors (see below), whose sum is σ = 2509401060. Its totient is φ = 1807935360.

The previous prime is 2133231109. The next prime is 2133231169. The reversal of 2133231121 is 1211323312.

It can be written as a sum of positive squares in 2 ways, for example, as 278723025 + 1854508096 = 16695^2 + 43064^2 .

It is not a de Polignac number, because 2133231121 - 2¹¹ = 2133229073 is a prime.

It is a super-5 number, since 5×2133231121⁵ (a number of 48 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133231421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240220 + ... + 248941.

It is an arithmetic number, because the mean of its divisors is an integer number (209116755).

Almost surely, 2^2133231121 is an apocalyptic number.

It is an amenable number.

2133231121 is a deficient number, since it is larger than the sum of its proper divisors (376169939).

2133231121 is an equidigital number, since it uses as much as digits as its factorization.

2133231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489264 (or 489257 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 2133231121 is about 46186.9150409507. The cubic root of 2133231121 is about 1287.2986197869.

Adding to 2133231121 its reverse (1211323312), we get a palindrome (3344554433).

The spelling of 2133231121 in words is "two billion, one hundred thirty-three million, two hundred thirty-one thousand, one hundred twenty-one".