1222635247 has 2 divisors, whose sum is σ = 1222635248. Its totient is φ = 1222635246.

The previous prime is 1222635221. The next prime is 1222635259. The reversal of 1222635247 is 7425362221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222635247 - 2⁷ = 1222635119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222635277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611317623 + 611317624.

It is an arithmetic number, because the mean of its divisors is an integer number (611317624).

Almost surely, 2^1222635247 is an apocalyptic number.

1222635247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222635247 is an equidigital number, since it uses as much as digits as its factorization.

1222635247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 1222635247 is about 34966.2014951581. The cubic root of 1222635247 is about 1069.2985319944.

Adding to 1222635247 its reverse (7425362221), we get a palindrome (8647997468).

The spelling of 1222635247 in words is "one billion, two hundred twenty-two million, six hundred thirty-five thousand, two hundred forty-seven".