212010200221 has 16 divisors (see below), whose sum is σ = 217902545280. Its totient is φ = 206192600640.

The previous prime is 212010200203. The next prime is 212010200231. The reversal of 212010200221 is 122002010212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212010200221 - 2³⁷ = 74571246749 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 (212010200231) 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, 4788616 + ... + 4832686.

It is an arithmetic number, because the mean of its divisors is an integer number (13618909080).

Almost surely, 2^212010200221 is an apocalyptic number.

It is an amenable number.

212010200221 is a deficient number, since it is larger than the sum of its proper divisors (5892345059).

212010200221 is a wasteful number, since it uses less digits than its factorization.

212010200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44916.

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

Adding to 212010200221 its reverse (122002010212), we get a palindrome (334012210433).

The spelling of 212010200221 in words is "two hundred twelve billion, ten million, two hundred thousand, two hundred twenty-one".