16222206 has 128 divisors (see below), whose sum is σ = 45351936. Its totient is φ = 3732480.

The previous prime is 16222127. The next prime is 16222211. The reversal of 16222206 is 60222261.

It is a super-3 number, since 3×16222206³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 222186 + ... + 222258.

It is an arithmetic number, because the mean of its divisors is an integer number (354312).

Almost surely, 2^16222206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16222206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22675968).

16222206 is an abundant number, since it is smaller than the sum of its proper divisors (29129730).

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

16222206 is a wasteful number, since it uses less digits than its factorization.

16222206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16222206 is about 4027.6799773567. The cubic root of 16222206 is about 253.1453595573.

Adding to 16222206 its reverse (60222261), we get a palindrome (76444467).

It can be divided in two parts, 1622 and 2206, that added together give a triangular number (3828 = T₈₇).

The spelling of 16222206 in words is "sixteen million, two hundred twenty-two thousand, two hundred six".