1222203251 has 2 divisors, whose sum is σ = 1222203252. Its totient is φ = 1222203250.

The previous prime is 1222203223. The next prime is 1222203341. The reversal of 1222203251 is 1523022221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222203251 - 2²⁶ = 1155094387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222233251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611101625 + 611101626.

It is an arithmetic number, because the mean of its divisors is an integer number (611101626).

Almost surely, 2^1222203251 is an apocalyptic number.

1222203251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222203251 is an equidigital number, since it uses as much as digits as its factorization.

1222203251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1222203251 is about 34960.0236126923. The cubic root of 1222203251 is about 1069.1725780748.

Adding to 1222203251 its reverse (1523022221), we get a palindrome (2745225472).

The spelling of 1222203251 in words is "one billion, two hundred twenty-two million, two hundred three thousand, two hundred fifty-one".