12522210 has 64 divisors (see below), whose sum is σ = 31352832. Its totient is φ = 3198656.

The previous prime is 12522193. The next prime is 12522221. The reversal of 12522210 is 1222521.

It is a super-3 number, since 3×12522210³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12522210.

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 in 31 ways as a sum of consecutive naturals, for example, 116977 + ... + 117083.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^12522210 is an apocalyptic number.

12522210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12522210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15676416).

12522210 is an abundant number, since it is smaller than the sum of its proper divisors (18830622).

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

12522210 is a wasteful number, since it uses less digits than its factorization.

12522210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12522210 is about 3538.6734802748. The cubic root of 12522210 is about 232.2168132694.

Adding to 12522210 its reverse (1222521), we get a palindrome (13744731).

The spelling of 12522210 in words is "twelve million, five hundred twenty-two thousand, two hundred ten".