111201202221 has 8 divisors (see below), whose sum is σ = 148271832960. Its totient is φ = 74132353152.

The previous prime is 111201202219. The next prime is 111201202237. The reversal of 111201202221 is 122202102111.

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

It is not a de Polignac number, because 111201202221 - 2¹ = 111201202219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111201202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201202121) 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, 292260 + ... + 554813.

It is an arithmetic number, because the mean of its divisors is an integer number (18533979120).

Almost surely, 2^111201202221 is an apocalyptic number.

It is an amenable number.

111201202221 is a deficient number, since it is larger than the sum of its proper divisors (37070630739).

111201202221 is an equidigital number, since it uses as much as digits as its factorization.

111201202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890835.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111201202221 its reverse (122202102111), we get a palindrome (233403304332).

The spelling of 111201202221 in words is "one hundred eleven billion, two hundred one million, two hundred two thousand, two hundred twenty-one".