212004313021 has 16 divisors (see below), whose sum is σ = 224200051200. Its totient is φ = 200060834688.

The previous prime is 212004313013. The next prime is 212004313039. The reversal of 212004313021 is 120313400212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212004313021 - 2³ = 212004313013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212004313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212004313121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2274625 + ... + 2365993.

It is an arithmetic number, because the mean of its divisors is an integer number (14012503200).

Almost surely, 2^212004313021 is an apocalyptic number.

It is an amenable number.

212004313021 is a deficient number, since it is larger than the sum of its proper divisors (12195738179).

212004313021 is a wasteful number, since it uses less digits than its factorization.

212004313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92748.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212004313021 its reverse (120313400212), we get a palindrome (332317713233).

The spelling of 212004313021 in words is "two hundred twelve billion, four million, three hundred thirteen thousand, twenty-one".