12223221002 has 4 divisors (see below), whose sum is σ = 18334831506. Its totient is φ = 6111610500.

The previous prime is 12223221001. The next prime is 12223221011. The reversal of 12223221002 is 20012232221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9967825921 + 2255395081 = 99839^2 + 47491^2 .

It is not an unprimeable number, because it can be changed into a prime (12223221001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055805249 + ... + 3055805252.

Almost surely, 2^12223221002 is an apocalyptic number.

12223221002 is a deficient number, since it is larger than the sum of its proper divisors (6111610504).

12223221002 is an equidigital number, since it uses as much as digits as its factorization.

12223221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111610503.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12223221002 its reverse (20012232221), we get a palindrome (32235453223).

The spelling of 12223221002 in words is "twelve billion, two hundred twenty-three million, two hundred twenty-one thousand, two".