2233121321 has 2 divisors, whose sum is σ = 2233121322. Its totient is φ = 2233121320.

The previous prime is 2233121291. The next prime is 2233121329. The reversal of 2233121321 is 1231213322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2212291225 + 20830096 = 47035^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2233121321 - 2⁶ = 2233121257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2233121293 and 2233121302.

It is not a weakly prime, because it can be changed into another prime (2233121329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116560660 + 1116560661.

It is an arithmetic number, because the mean of its divisors is an integer number (1116560661).

Almost surely, 2^2233121321 is an apocalyptic number.

It is an amenable number.

2233121321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2233121321 is an equidigital number, since it uses as much as digits as its factorization.

2233121321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 2233121321 is about 47255.9130797406. The cubic root of 2233121321 is about 1307.0858284546.

Adding to 2233121321 its reverse (1231213322), we get a palindrome (3464334643).

The spelling of 2233121321 in words is "two billion, two hundred thirty-three million, one hundred twenty-one thousand, three hundred twenty-one".