212012000221 has 16 divisors (see below), whose sum is σ = 246502456960. Its totient is φ = 178577887680.

The previous prime is 212012000209. The next prime is 212012000237. The reversal of 212012000221 is 122000210212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212012000221 - 2³⁷ = 74573046749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012000201) 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, 224230 + ... + 688696.

It is an arithmetic number, because the mean of its divisors is an integer number (15406403560).

Almost surely, 2^212012000221 is an apocalyptic number.

It is an amenable number.

212012000221 is a deficient number, since it is larger than the sum of its proper divisors (34490456739).

212012000221 is a wasteful number, since it uses less digits than its factorization.

212012000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465604.

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

Adding to 212012000221 its reverse (122000210212), we get a palindrome (334012210433).

The spelling of 212012000221 in words is "two hundred twelve billion, twelve million, two hundred twenty-one", and thus it is an aban number.