12230403221 has 4 divisors (see below), whose sum is σ = 12231667500. Its totient is φ = 12229138944.

The previous prime is 12230403191. The next prime is 12230403257.

12230403221 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 2207590225 + 10022812996 = 46985^2 + 100114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12230403221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12230403193 and 12230403202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230403281) 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, 617516 + ... + 637013.

It is an arithmetic number, because the mean of its divisors is an integer number (3057916875).

Almost surely, 2^12230403221 is an apocalyptic number.

It is an amenable number.

12230403221 is a deficient number, since it is larger than the sum of its proper divisors (1264279).

12230403221 is an equidigital number, since it uses as much as digits as its factorization.

12230403221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264278.

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

The spelling of 12230403221 in words is "twelve billion, two hundred thirty million, four hundred three thousand, two hundred twenty-one".