1222594561 has 2 divisors, whose sum is σ = 1222594562. Its totient is φ = 1222594560.

The previous prime is 1222594553. The next prime is 1222594567. The reversal of 1222594561 is 1654952221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1158993936 + 63600625 = 34044^2 + 7975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222594561 - 2³ = 1222594553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222594561.

It is not a weakly prime, because it can be changed into another prime (1222594567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611297280 + 611297281.

It is an arithmetic number, because the mean of its divisors is an integer number (611297281).

Almost surely, 2^1222594561 is an apocalyptic number.

It is an amenable number.

1222594561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222594561 is an equidigital number, since it uses as much as digits as its factorization.

1222594561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 1222594561 is about 34965.6196999281. The cubic root of 1222594561 is about 1069.2866707401.

The spelling of 1222594561 in words is "one billion, two hundred twenty-two million, five hundred ninety-four thousand, five hundred sixty-one".