1222622647 has 2 divisors, whose sum is σ = 1222622648. Its totient is φ = 1222622646.

The previous prime is 1222622617. The next prime is 1222622651. The reversal of 1222622647 is 7462262221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222622647 - 2⁷ = 1222622519 is a prime.

It is a super-2 number, since 2×1222622647² = 2989612273914573218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222622617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611311323 + 611311324.

It is an arithmetic number, because the mean of its divisors is an integer number (611311324).

Almost surely, 2^1222622647 is an apocalyptic number.

1222622647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222622647 is an equidigital number, since it uses as much as digits as its factorization.

1222622647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 1222622647 is about 34966.0213207050. The cubic root of 1222622647 is about 1069.2948587245.

Adding to 1222622647 its reverse (7462262221), we get a palindrome (8684884868).

The spelling of 1222622647 in words is "one billion, two hundred twenty-two million, six hundred twenty-two thousand, six hundred forty-seven".