221222320111 has 8 divisors (see below), whose sum is σ = 240347736720. Its totient is φ = 202398091392.

The previous prime is 221222320097. The next prime is 221222320211. The reversal of 221222320111 is 111023222122.

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 221222320111 - 2⁹ = 221222319599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222320211) 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, 75295441 + ... + 75298378.

It is an arithmetic number, because the mean of its divisors is an integer number (30043467090).

Almost surely, 2^221222320111 is an apocalyptic number.

221222320111 is a deficient number, since it is larger than the sum of its proper divisors (19125416609).

221222320111 is a wasteful number, since it uses less digits than its factorization.

221222320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150593945.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221222320111 its reverse (111023222122), we get a palindrome (332245542233).

The spelling of 221222320111 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred twenty thousand, one hundred eleven".