1223221203 has 8 divisors (see below), whose sum is σ = 1812179600. Its totient is φ = 815480784.

The previous prime is 1223221199. The next prime is 1223221229. The reversal of 1223221203 is 3021223221.

It is not a de Polignac number, because 1223221203 - 2² = 1223221199 is a prime.

It is a super-2 number, since 2×1223221203² = 2992540222937534418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223221243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22652218 + ... + 22652271.

It is an arithmetic number, because the mean of its divisors is an integer number (226522450).

Almost surely, 2^1223221203 is an apocalyptic number.

1223221203 is a deficient number, since it is larger than the sum of its proper divisors (588958397).

1223221203 is an equidigital number, since it uses as much as digits as its factorization.

1223221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45304498 (or 45304492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223221203 is about 34974.5793827460. The cubic root of 1223221203 is about 1069.4693275019.

Adding to 1223221203 its reverse (3021223221), we get a palindrome (4244444424).

The spelling of 1223221203 in words is "one billion, two hundred twenty-three million, two hundred twenty-one thousand, two hundred three".