2323021221 has 16 divisors (see below), whose sum is σ = 3451923520. Its totient is φ = 1543996080.

The previous prime is 2323021213. The next prime is 2323021223. The reversal of 2323021221 is 1221203232.

It is not a de Polignac number, because 2323021221 - 2³ = 2323021213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2323021194 and 2323021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2323021223) 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, 121030 + ... + 138903.

It is an arithmetic number, because the mean of its divisors is an integer number (215745220).

Almost surely, 2^2323021221 is an apocalyptic number.

It is an amenable number.

2323021221 is a deficient number, since it is larger than the sum of its proper divisors (1128902299).

2323021221 is a wasteful number, since it uses less digits than its factorization.

2323021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260273 (or 260267 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2323021221 is about 48197.7304548669. The cubic root of 2323021221 is about 1324.3955892449.

Adding to 2323021221 its reverse (1221203232), we get a palindrome (3544224453).

The spelling of 2323021221 in words is "two billion, three hundred twenty-three million, twenty-one thousand, two hundred twenty-one".