1222555423 has 2 divisors, whose sum is σ = 1222555424. Its totient is φ = 1222555422.

The previous prime is 1222555417. The next prime is 1222555441. The reversal of 1222555423 is 3245552221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3245552221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222555423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222555483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611277711 + 611277712.

It is an arithmetic number, because the mean of its divisors is an integer number (611277712).

Almost surely, 2^1222555423 is an apocalyptic number.

1222555423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222555423 is an equidigital number, since it uses as much as digits as its factorization.

1222555423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 1222555423 is about 34965.0600314085. The cubic root of 1222555423 is about 1069.2752605284.

The spelling of 1222555423 in words is "one billion, two hundred twenty-two million, five hundred fifty-five thousand, four hundred twenty-three".