212101204 has 18 divisors (see below), whose sum is σ = 431777850. Its totient is φ = 90900432.

The previous prime is 212101181. The next prime is 212101207. The reversal of 212101204 is 402101212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 193265604 + 18835600 = 13902^2 + 4340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101207) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 540879 + ... + 541270.

Almost surely, 2^212101204 is an apocalyptic number.

It is an amenable number.

212101204 is an abundant number, since it is smaller than the sum of its proper divisors (219676646).

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

212101204 is a wasteful number, since it uses less digits than its factorization.

212101204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082167 (or 1082158 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212101204 is about 14563.6947235240. The cubic root of 212101204 is about 596.3680631212.

Adding to 212101204 its reverse (402101212), we get a palindrome (614202416).

The spelling of 212101204 in words is "two hundred twelve million, one hundred one thousand, two hundred four".