211404000221 has 8 divisors (see below), whose sum is σ = 211717359360. Its totient is φ = 211090849552.

The previous prime is 211404000209. The next prime is 211404000253. The reversal of 211404000221 is 122000404112.

211404000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 211404000221 - 2¹⁰ = 211403999197 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 211404000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211404000271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2039240 + ... + 2140398.

It is an arithmetic number, because the mean of its divisors is an integer number (26464669920).

Almost surely, 2^211404000221 is an apocalyptic number.

It is an amenable number.

211404000221 is a deficient number, since it is larger than the sum of its proper divisors (313359139).

211404000221 is a wasteful number, since it uses less digits than its factorization.

211404000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104235.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211404000221 its reverse (122000404112), we get a palindrome (333404404333).

The spelling of 211404000221 in words is "two hundred eleven billion, four hundred four million, two hundred twenty-one", and thus it is an aban number.