212245604 has 6 divisors (see below), whose sum is σ = 371429814. Its totient is φ = 106122800.

The previous prime is 212245591. The next prime is 212245609. The reversal of 212245604 is 406542212.

212245604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 211993600 + 252004 = 14560^2 + 502^2 .

It is not an unprimeable number, because it can be changed into a prime (212245609) by changing a digit.

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 as a sum of consecutive naturals, namely, 26530697 + ... + 26530704.

It is an arithmetic number, because the mean of its divisors is an integer number (61904969).

Almost surely, 2^212245604 is an apocalyptic number.

It is an amenable number.

212245604 is a deficient number, since it is larger than the sum of its proper divisors (159184210).

212245604 is a wasteful number, since it uses less digits than its factorization.

212245604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53061405 (or 53061403 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 212245604 is about 14568.6514132228. The cubic root of 212245604 is about 596.5033696186.

Adding to 212245604 its reverse (406542212), we get a palindrome (618787816).

The spelling of 212245604 in words is "two hundred twelve million, two hundred forty-five thousand, six hundred four".