12221403 has 16 divisors (see below), whose sum is σ = 16953216. Its totient is φ = 7824960.

The previous prime is 12221401. The next prime is 12221413. The reversal of 12221403 is 30412221.

It is not a de Polignac number, because 12221403 - 2¹ = 12221401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221401) 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 15 ways as a sum of consecutive naturals, for example, 7500 + ... + 8982.

It is an arithmetic number, because the mean of its divisors is an integer number (1059576).

Almost surely, 2^12221403 is an apocalyptic number.

12221403 is a deficient number, since it is larger than the sum of its proper divisors (4731813).

12221403 is a wasteful number, since it uses less digits than its factorization.

12221403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12221403 is about 3495.9123272760. The cubic root of 12221403 is about 230.3422943651.

Adding to 12221403 its reverse (30412221), we get a palindrome (42633624).

The spelling of 12221403 in words is "twelve million, two hundred twenty-one thousand, four hundred three".