12220321223 has 12 divisors (see below), whose sum is σ = 13806820248. Its totient is φ = 10726292640.

The previous prime is 12220321177. The next prime is 12220321279. The reversal of 12220321223 is 32212302221.

It is a happy number.

It is not a de Polignac number, because 12220321223 - 2⁶ = 12220321159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220321195 and 12220321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220371223) 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, 651236 + ... + 669737.

It is an arithmetic number, because the mean of its divisors is an integer number (1150568354).

Almost surely, 2^12220321223 is an apocalyptic number.

12220321223 is a deficient number, since it is larger than the sum of its proper divisors (1586499025).

12220321223 is a wasteful number, since it uses less digits than its factorization.

12220321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321042 (or 1321013 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12220321223 its reverse (32212302221), we get a palindrome (44432623444).

The spelling of 12220321223 in words is "twelve billion, two hundred twenty million, three hundred twenty-one thousand, two hundred twenty-three".