1223055115 has 4 divisors (see below), whose sum is σ = 1467666144. Its totient is φ = 978444088.

The previous prime is 1223055109. The next prime is 1223055131. The reversal of 1223055115 is 5115503221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223055115 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223055115.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122305507 + ... + 122305516.

It is an arithmetic number, because the mean of its divisors is an integer number (366916536).

Almost surely, 2^1223055115 is an apocalyptic number.

1223055115 is a deficient number, since it is larger than the sum of its proper divisors (244611029).

1223055115 is an equidigital number, since it uses as much as digits as its factorization.

1223055115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244611028.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1223055115 is about 34972.2048918852. The cubic root of 1223055115 is about 1069.4209214133.

Adding to 1223055115 its reverse (5115503221), we get a palindrome (6338558336).

The spelling of 1223055115 in words is "one billion, two hundred twenty-three million, fifty-five thousand, one hundred fifteen".