13212500 has 72 divisors (see below), whose sum is σ = 33247872. Its totient is φ = 4500000.

The previous prime is 13212491. The next prime is 13212523. The reversal of 13212500 is 521231.

It is a happy number.

13212500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87425 + ... + 87575.

It is an arithmetic number, because the mean of its divisors is an integer number (461776).

Almost surely, 2^13212500 is an apocalyptic number.

13212500 is a gapful number since it is divisible by the number (10) 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 13212500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16623936).

13212500 is an abundant number, since it is smaller than the sum of its proper divisors (20035372).

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

13212500 is an equidigital number, since it uses as much as digits as its factorization.

13212500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 13212500 is about 3634.9002737352. The cubic root of 13212500 is about 236.4077266684.

Adding to 13212500 its reverse (521231), we get a palindrome (13733731).

The spelling of 13212500 in words is "thirteen million, two hundred twelve thousand, five hundred".