11222251 has 2 divisors, whose sum is σ = 11222252. Its totient is φ = 11222250.

The previous prime is 11222243. The next prime is 11222257. The reversal of 11222251 is 15222211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11222251 - 2³ = 11222243 is a prime.

It is not a weakly prime, because it can be changed into another prime (11222257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611125 + 5611126.

It is an arithmetic number, because the mean of its divisors is an integer number (5611126).

Almost surely, 2^11222251 is an apocalyptic number.

11222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222251 is an equidigital number, since it uses as much as digits as its factorization.

11222251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80, while the sum is 16.

The square root of 11222251 is about 3349.9628356147. The cubic root of 11222251 is about 223.8858567590.

Adding to 11222251 its reverse (15222211), we get a palindrome (26444462).

The spelling of 11222251 in words is "eleven million, two hundred twenty-two thousand, two hundred fifty-one".