12233033221 has 4 divisors (see below), whose sum is σ = 12251103372. Its totient is φ = 12214963072.

The previous prime is 12233033201. The next prime is 12233033227.

12233033221 is nontrivially palindromic in base 10.

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 7862368900 + 4370664321 = 88670^2 + 66111^2 .

It is a cyclic number.

It is not a de Polignac number, because 12233033221 - 2⁹ = 12233032709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12233033192 and 12233033201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12233033227) 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, 9034060 + ... + 9035413.

It is an arithmetic number, because the mean of its divisors is an integer number (3062775843).

Almost surely, 2^12233033221 is an apocalyptic number.

It is an amenable number.

12233033221 is a deficient number, since it is larger than the sum of its proper divisors (18070151).

12233033221 is an equidigital number, since it uses as much as digits as its factorization.

12233033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18070150.

The product of its (nonzero) digits is 1296, while the sum is 22.

It can be divided in two parts, 122330 and 33221, that added together give a palindrome (155551).

The spelling of 12233033221 in words is "twelve billion, two hundred thirty-three million, thirty-three thousand, two hundred twenty-one".