1223310555 has 12 divisors (see below), whose sum is σ = 2120405040. Its totient is φ = 652432272.

The previous prime is 1223310547. The next prime is 1223310577. The reversal of 1223310555 is 5550133221.

It is a happy number.

It is not a de Polignac number, because 1223310555 - 2³ = 1223310547 is a prime.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 13592295 + ... + 13592384.

It is an arithmetic number, because the mean of its divisors is an integer number (176700420).

Almost surely, 2^1223310555 is an apocalyptic number.

1223310555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223310555 is a deficient number, since it is larger than the sum of its proper divisors (897094485).

1223310555 is a wasteful number, since it uses less digits than its factorization.

1223310555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27184690 (or 27184687 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1223310555 is about 34975.8567443315. The cubic root of 1223310555 is about 1069.4953671902.

Adding to 1223310555 its reverse (5550133221), we get a palindrome (6773443776).

The spelling of 1223310555 in words is "one billion, two hundred twenty-three million, three hundred ten thousand, five hundred fifty-five".