1223235555 has 8 divisors (see below), whose sum is σ = 1957176912. Its totient is φ = 652392288.

The previous prime is 1223235551. The next prime is 1223235571. The reversal of 1223235555 is 5555323221.

1223235555 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223235555 - 2² = 1223235551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223235551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40774504 + ... + 40774533.

It is an arithmetic number, because the mean of its divisors is an integer number (244647114).

Almost surely, 2^1223235555 is an apocalyptic number.

1223235555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223235555 is a deficient number, since it is larger than the sum of its proper divisors (733941357).

1223235555 is an equidigital number, since it uses as much as digits as its factorization.

1223235555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81549045.

The product of its digits is 45000, while the sum is 33.

The square root of 1223235555 is about 34974.7845597367. The cubic root of 1223235555 is about 1069.4735101642.

Adding to 1223235555 its reverse (5555323221), we get a palindrome (6778558776).

The spelling of 1223235555 in words is "one billion, two hundred twenty-three million, two hundred thirty-five thousand, five hundred fifty-five".