12122003 has 4 divisors (see below), whose sum is σ = 12835080. Its totient is φ = 11408928.

The previous prime is 12121987. The next prime is 12122009. The reversal of 12122003 is 30022121.

It is a happy number.

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 12122003 - 2⁴ = 12121987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122009) 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, 356513 + ... + 356546.

It is an arithmetic number, because the mean of its divisors is an integer number (3208770).

Almost surely, 2^12122003 is an apocalyptic number.

12122003 is a deficient number, since it is larger than the sum of its proper divisors (713077).

12122003 is an equidigital number, since it uses as much as digits as its factorization.

12122003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713076.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12122003 is about 3481.6666985799. Note that the first 4 decimals coincide. The cubic root of 12122003 is about 229.7161147777.

Adding to 12122003 its reverse (30022121), we get a palindrome (42144124).

The spelling of 12122003 in words is "twelve million, one hundred twenty-two thousand, three".