221012022211 has 8 divisors (see below), whose sum is σ = 230628059424. Its totient is φ = 211396553280.

The previous prime is 221012022173. The next prime is 221012022299. The reversal of 221012022211 is 112220210122.

It is a happy number.

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 221012022211 - 2²⁵ = 220978467779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012022611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780105 + ... + 1024981.

It is an arithmetic number, because the mean of its divisors is an integer number (28828507428).

Almost surely, 2^221012022211 is an apocalyptic number.

221012022211 is a deficient number, since it is larger than the sum of its proper divisors (9616037213).

221012022211 is a wasteful number, since it uses less digits than its factorization.

221012022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284141.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221012022211 its reverse (112220210122), we get a palindrome (333232232333).

The spelling of 221012022211 in words is "two hundred twenty-one billion, twelve million, twenty-two thousand, two hundred eleven".