13225212 has 144 divisors (see below), whose sum is σ = 45007872. Its totient is φ = 3162240.

The previous prime is 13225193. The next prime is 13225213. The reversal of 13225212 is 21252231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13225213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35853 + ... + 36219.

Almost surely, 2^13225212 is an apocalyptic number.

13225212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13225212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22503936).

13225212 is an abundant number, since it is smaller than the sum of its proper divisors (31782660).

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

13225212 is a wasteful number, since it uses less digits than its factorization.

13225212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 403 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 13225212 is about 3636.6484570274. The cubic root of 13225212 is about 236.4835198376.

Adding to 13225212 its reverse (21252231), we get a palindrome (34477443).

The spelling of 13225212 in words is "thirteen million, two hundred twenty-five thousand, two hundred twelve".