12302033221 has 12 divisors (see below), whose sum is σ = 13122549220. Its totient is φ = 11530275840.

The previous prime is 12302033213. The next prime is 12302033291. The reversal of 12302033221 is 12233020321.

It can be written as a sum of positive squares in 6 ways, for example, as 2757720196 + 9544313025 = 52514^2 + 97695^2 .

It is not a de Polignac number, because 12302033221 - 2³ = 12302033213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302033291) 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, 18666 + ... + 157963.

Almost surely, 2^12302033221 is an apocalyptic number.

It is an amenable number.

12302033221 is a deficient number, since it is larger than the sum of its proper divisors (820515999).

12302033221 is a wasteful number, since it uses less digits than its factorization.

12302033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176904 (or 176887 counting only the distinct ones).

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

Adding to 12302033221 its reverse (12233020321), we get a palindrome (24535053542).

The spelling of 12302033221 in words is "twelve billion, three hundred two million, thirty-three thousand, two hundred twenty-one".