16522212 has 36 divisors (see below), whose sum is σ = 44847600. Its totient is φ = 4720464.

The previous prime is 16522201. The next prime is 16522213. The reversal of 16522212 is 21222561.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (16522213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13462 + ... + 14637.

Almost surely, 2^16522212 is an apocalyptic number.

16522212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16522212 is an abundant number, since it is smaller than the sum of its proper divisors (28325388).

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

16522212 is a wasteful number, since it uses less digits than its factorization.

16522212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28120 (or 28111 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 16522212 is about 4064.7523909828. The cubic root of 16522212 is about 254.6963552217.

Adding to 16522212 its reverse (21222561), we get a palindrome (37744773).

The spelling of 16522212 in words is "sixteen million, five hundred twenty-two thousand, two hundred twelve".