221011100011211 has 8 divisors (see below), whose sum is σ = 230620825167264. Its totient is φ = 211401420429760.

The previous prime is 221011100011199. The next prime is 221011100011223. The reversal of 221011100011211 is 112110001110122.

It is an interprime number because it is at equal distance from previous prime (221011100011199) and next prime (221011100011223).

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 221011100011211 - 2¹⁰ = 221011100010187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221011100011271) 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, 1293410 + ... + 21064071.

It is an arithmetic number, because the mean of its divisors is an integer number (28827603145908).

Almost surely, 2^{221011100011211} is an apocalyptic number.

221011100011211 is a deficient number, since it is larger than the sum of its proper divisors (9609725156053).

221011100011211 is a wasteful number, since it uses less digits than its factorization.

221011100011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22787301.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221011100011211 its reverse (112110001110122), we get a palindrome (333121101121333).

The spelling of 221011100011211 in words is "two hundred twenty-one trillion, eleven billion, one hundred million, eleven thousand, two hundred eleven".