1223112003 has 4 divisors (see below), whose sum is σ = 1630816008. Its totient is φ = 815408000.

The previous prime is 1223111969. The next prime is 1223112017. The reversal of 1223112003 is 3002113221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223112003 - 2¹⁰ = 1223110979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223112043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203851998 + ... + 203852003.

It is an arithmetic number, because the mean of its divisors is an integer number (407704002).

Almost surely, 2^1223112003 is an apocalyptic number.

1223112003 is a deficient number, since it is larger than the sum of its proper divisors (407704005).

1223112003 is an equidigital number, since it uses as much as digits as its factorization.

1223112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407704004.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1223112003 is about 34973.0182140461. The cubic root of 1223112003 is about 1069.4375018256.

Adding to 1223112003 its reverse (3002113221), we get a palindrome (4225225224).

The spelling of 1223112003 in words is "one billion, two hundred twenty-three million, one hundred twelve thousand, three".