2321133121 has 4 divisors (see below), whose sum is σ = 2327356372. Its totient is φ = 2314909872.

The previous prime is 2321133071. The next prime is 2321133127. The reversal of 2321133121 is 1213311232.

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 470412721 + 1850720400 = 21689^2 + 43020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321133121 - 2⁷ = 2321132993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321133127) 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, 3111066 + ... + 3111811.

It is an arithmetic number, because the mean of its divisors is an integer number (581839093).

Almost surely, 2^2321133121 is an apocalyptic number.

It is an amenable number.

2321133121 is a deficient number, since it is larger than the sum of its proper divisors (6223251).

2321133121 is an equidigital number, since it uses as much as digits as its factorization.

2321133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223250.

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

The square root of 2321133121 is about 48178.1394514151. The cubic root of 2321133121 is about 1324.0366788928.

Adding to 2321133121 its reverse (1213311232), we get a palindrome (3534444353).

The spelling of 2321133121 in words is "two billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred twenty-one".