12203123 has 4 divisors (see below), whose sum is σ = 12324048. Its totient is φ = 12082200.

The previous prime is 12203089. The next prime is 12203137. The reversal of 12203123 is 32130221.

It is a happy number.

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-12203123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12203098 and 12203107.

It is not an unprimeable number, because it can be changed into a prime (12203153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60311 + ... + 60512.

It is an arithmetic number, because the mean of its divisors is an integer number (3081012).

Almost surely, 2^12203123 is an apocalyptic number.

12203123 is a deficient number, since it is larger than the sum of its proper divisors (120925).

12203123 is a wasteful number, since it uses less digits than its factorization.

12203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120924.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12203123 is about 3493.2968668580. The cubic root of 12203123 is about 230.2273932573.

Adding to 12203123 its reverse (32130221), we get a palindrome (44333344).

The spelling of 12203123 in words is "twelve million, two hundred three thousand, one hundred twenty-three".