1222445677 has 2 divisors, whose sum is σ = 1222445678. Its totient is φ = 1222445676.

The previous prime is 1222445669. The next prime is 1222445681. The reversal of 1222445677 is 7765442221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176558601 + 45887076 = 34301^2 + 6774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222445677 - 2³ = 1222445669 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222445977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611222838 + 611222839.

It is an arithmetic number, because the mean of its divisors is an integer number (611222839).

Almost surely, 2^1222445677 is an apocalyptic number.

It is an amenable number.

1222445677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222445677 is an equidigital number, since it uses as much as digits as its factorization.

1222445677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 40.

The square root of 1222445677 is about 34963.4906295124. The cubic root of 1222445677 is about 1069.2432641073.

Adding to 1222445677 its reverse (7765442221), we get a palindrome (8987887898).

The spelling of 1222445677 in words is "one billion, two hundred twenty-two million, four hundred forty-five thousand, six hundred seventy-seven".