2123032321 has 2 divisors, whose sum is σ = 2123032322. Its totient is φ = 2123032320.

The previous prime is 2123032309. The next prime is 2123032337. The reversal of 2123032321 is 1232303212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1974558096 + 148474225 = 44436^2 + 12185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123032321 - 2¹⁵ = 2122999553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2123032381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061516160 + 1061516161.

It is an arithmetic number, because the mean of its divisors is an integer number (1061516161).

Almost surely, 2^2123032321 is an apocalyptic number.

It is an amenable number.

2123032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123032321 is an equidigital number, since it uses as much as digits as its factorization.

2123032321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2123032321 is about 46076.3748682554. The cubic root of 2123032321 is about 1285.2438526450.

Adding to 2123032321 its reverse (1232303212), we get a palindrome (3355335533).

The spelling of 2123032321 in words is "two billion, one hundred twenty-three million, thirty-two thousand, three hundred twenty-one".