1222211203 has 2 divisors, whose sum is σ = 1222211204. Its totient is φ = 1222211202.

The previous prime is 1222211183. The next prime is 1222211213. The reversal of 1222211203 is 3021122221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222211203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222211213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611105601 + 611105602.

It is an arithmetic number, because the mean of its divisors is an integer number (611105602).

Almost surely, 2^1222211203 is an apocalyptic number.

1222211203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222211203 is an equidigital number, since it uses as much as digits as its factorization.

1222211203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1222211203 is about 34960.1373424076. The cubic root of 1222211203 is about 1069.1748968495.

Adding to 1222211203 its reverse (3021122221), we get a palindrome (4243333424).

The spelling of 1222211203 in words is "one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred three".