1222203123 has 12 divisors (see below), whose sum is σ = 1767300808. Its totient is φ = 813926880.

The previous prime is 1222203077. The next prime is 1222203127. The reversal of 1222203123 is 3213022221.

It is not a de Polignac number, because 1222203123 - 2⁸ = 1222202867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222203096 and 1222203105.

It is not an unprimeable number, because it can be changed into a prime (1222203127) by changing a digit.

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, 64033 + ... + 80898.

Almost surely, 2^1222203123 is an apocalyptic number.

1222203123 is a deficient number, since it is larger than the sum of its proper divisors (545097685).

1222203123 is a wasteful number, since it uses less digits than its factorization.

1222203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145874 (or 145871 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1222203123 is about 34960.0217820298. The cubic root of 1222203123 is about 1069.1725407504.

Adding to 1222203123 its reverse (3213022221), we get a palindrome (4435225344).

The spelling of 1222203123 in words is "one billion, two hundred twenty-two million, two hundred three thousand, one hundred twenty-three".