1222110251 has 2 divisors, whose sum is σ = 1222110252. Its totient is φ = 1222110250.

The previous prime is 1222110209. The next prime is 1222110271. The reversal of 1222110251 is 1520112221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222110251 - 2¹⁰ = 1222109227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222110271) 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, 611055125 + 611055126.

It is an arithmetic number, because the mean of its divisors is an integer number (611055126).

Almost surely, 2^1222110251 is an apocalyptic number.

1222110251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222110251 is an equidigital number, since it uses as much as digits as its factorization.

1222110251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1222110251 is about 34958.6934967541. The cubic root of 1222110251 is about 1069.1454588616.

Adding to 1222110251 its reverse (1520112221), we get a palindrome (2742222472).

The spelling of 1222110251 in words is "one billion, two hundred twenty-two million, one hundred ten thousand, two hundred fifty-one".