221100110211 has 8 divisors (see below), whose sum is σ = 294827214160. Its totient is φ = 147386539872.

The previous prime is 221100110207. The next prime is 221100110213. The reversal of 221100110211 is 112011001122.

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

It is not a de Polignac number, because 221100110211 - 2² = 221100110207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100110213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3345220 + ... + 3410673.

It is an arithmetic number, because the mean of its divisors is an integer number (36853401770).

Almost surely, 2^221100110211 is an apocalyptic number.

221100110211 is a deficient number, since it is larger than the sum of its proper divisors (73727103949).

221100110211 is a wasteful number, since it uses less digits than its factorization.

221100110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766805.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221100110211 its reverse (112011001122), we get a palindrome (333111111333).

The spelling of 221100110211 in words is "two hundred twenty-one billion, one hundred million, one hundred ten thousand, two hundred eleven".