1222866523 has 2 divisors, whose sum is σ = 1222866524. Its totient is φ = 1222866522.

The previous prime is 1222866511. The next prime is 1222866679. The reversal of 1222866523 is 3256682221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222866523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222866023) 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, 611433261 + 611433262.

It is an arithmetic number, because the mean of its divisors is an integer number (611433262).

Almost surely, 2^1222866523 is an apocalyptic number.

1222866523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222866523 is an equidigital number, since it uses as much as digits as its factorization.

1222866523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 1222866523 is about 34969.5084752417. The cubic root of 1222866523 is about 1069.3659512556.

The spelling of 1222866523 in words is "one billion, two hundred twenty-two million, eight hundred sixty-six thousand, five hundred twenty-three".