14331221 has 8 divisors (see below), whose sum is σ = 15231960. Its totient is φ = 13483584.

The previous prime is 14331217. The next prime is 14331223. The reversal of 14331221 is 12213341.

It can be written as a sum of positive squares in 4 ways, for example, as 7623121 + 6708100 = 2761^2 + 2590^2 .

It is not a de Polignac number, because 14331221 - 2² = 14331217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14331223) 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, 3455 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (1903995).

Almost surely, 2^14331221 is an apocalyptic number.

It is an amenable number.

14331221 is a deficient number, since it is larger than the sum of its proper divisors (900739).

14331221 is an frugal number, since it uses more digits than its factorization.

14331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968 (or 2934 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 14331221 is about 3785.6599160516. The cubic root of 14331221 is about 242.9001209652.

Adding to 14331221 its reverse (12213341), we get a palindrome (26544562).

The spelling of 14331221 in words is "fourteen million, three hundred thirty-one thousand, two hundred twenty-one".