12221003 has 8 divisors (see below), whose sum is σ = 12543888. Its totient is φ = 11902464.

The previous prime is 12220997. The next prime is 12221021. The reversal of 12221003 is 30012221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221003 - 2¹² = 12216907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5051 + ... + 7067.

It is an arithmetic number, because the mean of its divisors is an integer number (1567986).

Almost surely, 2^12221003 is an apocalyptic number.

12221003 is a deficient number, since it is larger than the sum of its proper divisors (322885).

12221003 is an equidigital number, since it uses as much as digits as its factorization.

12221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

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

The square root of 12221003 is about 3495.8551171351. The cubic root of 12221003 is about 230.3397813442.

Adding to 12221003 its reverse (30012221), we get a palindrome (42233224).

The spelling of 12221003 in words is "twelve million, two hundred twenty-one thousand, three".