1222528717 has 2 divisors, whose sum is σ = 1222528718. Its totient is φ = 1222528716.

The previous prime is 1222528649. The next prime is 1222528721. The reversal of 1222528717 is 7178252221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014995881 + 207532836 = 31859^2 + 14406^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222528717 - 2⁷ = 1222528589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222528777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611264358 + 611264359.

It is an arithmetic number, because the mean of its divisors is an integer number (611264359).

Almost surely, 2^1222528717 is an apocalyptic number.

It is an amenable number.

1222528717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222528717 is an equidigital number, since it uses as much as digits as its factorization.

1222528717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 1222528717 is about 34964.6781337967. The cubic root of 1222528717 is about 1069.2674745765.

The spelling of 1222528717 in words is "one billion, two hundred twenty-two million, five hundred twenty-eight thousand, seven hundred seventeen".