16221262 has 4 divisors (see below), whose sum is σ = 24331896. Its totient is φ = 8110630.

The previous prime is 16221253. The next prime is 16221311. The reversal of 16221262 is 26212261.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055314 + ... + 4055317.

It is an arithmetic number, because the mean of its divisors is an integer number (6082974).

Almost surely, 2^16221262 is an apocalyptic number.

16221262 is a deficient number, since it is larger than the sum of its proper divisors (8110634).

16221262 is an equidigital number, since it uses as much as digits as its factorization.

16221262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110633.

The product of its digits is 576, while the sum is 22.

The square root of 16221262 is about 4027.5627865994. The cubic root of 16221262 is about 253.1404491307.

Subtracting 16221262 from its reverse (26212261), we obtain a palindrome (9990999).

The spelling of 16221262 in words is "sixteen million, two hundred twenty-one thousand, two hundred sixty-two".