111221202221 has 8 divisors (see below), whose sum is σ = 111476514240. Its totient is φ = 110966172768.

The previous prime is 111221202199. The next prime is 111221202229. The reversal of 111221202221 is 122202122111.

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 111221202221 - 2¹⁰ = 111221201197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111221202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221202229) 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, 727790 + ... + 867248.

It is an arithmetic number, because the mean of its divisors is an integer number (13934564280).

Almost surely, 2^111221202221 is an apocalyptic number.

It is an amenable number.

111221202221 is a deficient number, since it is larger than the sum of its proper divisors (255312019).

111221202221 is a wasteful number, since it uses less digits than its factorization.

111221202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141283.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111221202221 its reverse (122202122111), we get a palindrome (233423324332).

The spelling of 111221202221 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-one".