212225104 has 40 divisors (see below), whose sum is σ = 506078720. Its totient is φ = 83956608.

The previous prime is 212225087. The next prime is 212225131. The reversal of 212225104 is 401522212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71424 + ... + 74335.

It is an arithmetic number, because the mean of its divisors is an integer number (12651968).

Almost surely, 2^212225104 is an apocalyptic number.

It is an amenable number.

212225104 is an abundant number, since it is smaller than the sum of its proper divisors (293853616).

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

212225104 is a wasteful number, since it uses less digits than its factorization.

212225104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145787 (or 145781 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 212225104 is about 14567.9478307688. The cubic root of 212225104 is about 596.4841643322.

Adding to 212225104 its reverse (401522212), we get a palindrome (613747316).

The spelling of 212225104 in words is "two hundred twelve million, two hundred twenty-five thousand, one hundred four".