212100200221 has 8 divisors (see below), whose sum is σ = 261046400384. Its totient is φ = 167815542960.

The previous prime is 212100200201. The next prime is 212100200231. The reversal of 212100200221 is 122002001212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212100200221 - 2¹⁷ = 212100069149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100200201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165385625 + ... + 1165385806.

It is an arithmetic number, because the mean of its divisors is an integer number (32630800048).

Almost surely, 2^212100200221 is an apocalyptic number.

It is an amenable number.

212100200221 is a deficient number, since it is larger than the sum of its proper divisors (48946200163).

212100200221 is a wasteful number, since it uses less digits than its factorization.

212100200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330771451.

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

Adding to 212100200221 its reverse (122002001212), we get a palindrome (334102201433).

The spelling of 212100200221 in words is "two hundred twelve billion, one hundred million, two hundred thousand, two hundred twenty-one".