12001203 has 20 divisors (see below), whose sum is σ = 18033840. Its totient is φ = 7953552.

The previous prime is 12001189. The next prime is 12001207. The reversal of 12001203 is 30210021.

It is a happy number.

It is not a de Polignac number, because 12001203 - 2⁶ = 12001139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12001207) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18226 + ... + 18872.

It is an arithmetic number, because the mean of its divisors is an integer number (901692).

Almost surely, 2^12001203 is an apocalyptic number.

12001203 is a deficient number, since it is larger than the sum of its proper divisors (6032637).

12001203 is an equidigital number, since it uses as much as digits as its factorization.

12001203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12001203 is about 3464.2752488796. The cubic root of 12001203 is about 228.9504987619.

Adding to 12001203 its reverse (30210021), we get a palindrome (42211224).

The spelling of 12001203 in words is "twelve million, one thousand, two hundred three".