16221114 has 64 divisors (see below), whose sum is σ = 44378880. Its totient is φ = 4276800.

The previous prime is 16221113. The next prime is 16221119. The reversal of 16221114 is 41112261.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (16221113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3264 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (693420).

Almost surely, 2^16221114 is an apocalyptic number.

16221114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16221114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22189440).

16221114 is an abundant number, since it is smaller than the sum of its proper divisors (28157766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16221114 is a wasteful number, since it uses less digits than its factorization.

16221114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3326 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 16221114 is about 4027.5444131629. The cubic root of 16221114 is about 253.1396792584.

Adding to 16221114 its reverse (41112261), we get a palindrome (57333375).

The spelling of 16221114 in words is "sixteen million, two hundred twenty-one thousand, one hundred fourteen".