221133010111 has 4 divisors (see below), whose sum is σ = 238143241672. Its totient is φ = 204122778552.

The previous prime is 221133010073. The next prime is 221133010121. The reversal of 221133010111 is 111010331122.

It is a happy number.

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 221133010111 - 2¹⁹ = 221132485823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221133010121) 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, 8505115761 + ... + 8505115786.

It is an arithmetic number, because the mean of its divisors is an integer number (59535810418).

Almost surely, 2^221133010111 is an apocalyptic number.

221133010111 is a deficient number, since it is larger than the sum of its proper divisors (17010231561).

221133010111 is a wasteful number, since it uses less digits than its factorization.

221133010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010231560.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 221133010111 its reverse (111010331122), we get a palindrome (332143341233).

The spelling of 221133010111 in words is "two hundred twenty-one billion, one hundred thirty-three million, ten thousand, one hundred eleven".