1222776227 has 2 divisors, whose sum is σ = 1222776228. Its totient is φ = 1222776226.

The previous prime is 1222776211. The next prime is 1222776229. The reversal of 1222776227 is 7226772221.

It is a strong prime.

It is an emirp because it is prime and its reverse (7226772221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222776227 - 2⁴ = 1222776211 is a prime.

Together with 1222776229, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1222776229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611388113 + 611388114.

It is an arithmetic number, because the mean of its divisors is an integer number (611388114).

Almost surely, 2^1222776227 is an apocalyptic number.

1222776227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222776227 is an equidigital number, since it uses as much as digits as its factorization.

1222776227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 38.

The square root of 1222776227 is about 34968.2173837901. The cubic root of 1222776227 is about 1069.3396300824.

The spelling of 1222776227 in words is "one billion, two hundred twenty-two million, seven hundred seventy-six thousand, two hundred twenty-seven".