221000001010211 has 4 divisors (see below), whose sum is σ = 221000054812632. Its totient is φ = 220999947207792.

The previous prime is 221000001010193. The next prime is 221000001010273. The reversal of 221000001010211 is 112010100000122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221000001010211 - 2¹⁰ = 221000001009187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221000001010192 and 221000001010201.

It is not an unprimeable number, because it can be changed into a prime (221000001610211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20180021 + ... + 29141606.

It is an arithmetic number, because the mean of its divisors is an integer number (55250013703158).

Almost surely, 2^{221000001010211} is an apocalyptic number.

221000001010211 is a deficient number, since it is larger than the sum of its proper divisors (53802421).

221000001010211 is an equidigital number, since it uses as much as digits as its factorization.

221000001010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53802420.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221000001010211 its reverse (112010100000122), we get a palindrome (333010101010333).

The spelling of 221000001010211 in words is "two hundred twenty-one trillion, one million, ten thousand, two hundred eleven".