221000011211 has 8 divisors (see below), whose sum is σ = 252743153664. Its totient is φ = 189299796840.

The previous prime is 221000011201. The next prime is 221000011259. The reversal of 221000011211 is 112110000122.

221000011211 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 not a de Polignac number, because 221000011211 - 2¹⁴ = 220999994827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221000011192 and 221000011201.

It is not an unprimeable number, because it can be changed into a prime (221000011201) 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, 10720985 + ... + 10741578.

It is an arithmetic number, because the mean of its divisors is an integer number (31592894208).

Almost surely, 2^221000011211 is an apocalyptic number.

221000011211 is a deficient number, since it is larger than the sum of its proper divisors (31743142453).

221000011211 is a wasteful number, since it uses less digits than its factorization.

221000011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21464041.

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

Adding to 221000011211 its reverse (112110000122), we get a palindrome (333110011333).

The spelling of 221000011211 in words is "two hundred twenty-one billion, eleven thousand, two hundred eleven".