111201021100221 has 16 divisors (see below), whose sum is σ = 159673450599936. Its totient is φ = 68431316371776.

The previous prime is 111201021100193. The next prime is 111201021100237. The reversal of 111201021100221 is 122001120102111.

It is a happy number.

It is not a de Polignac number, because 111201021100221 - 2⁶ = 111201021100157 is a prime.

It is a super-3 number, since 3×111201021100221³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 111201021100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201021100621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60748276 + ... + 62552018.

It is an arithmetic number, because the mean of its divisors is an integer number (9979590662496).

Almost surely, 2^{111201021100221} is an apocalyptic number.

It is an amenable number.

111201021100221 is a deficient number, since it is larger than the sum of its proper divisors (48472429499715).

111201021100221 is a wasteful number, since it uses less digits than its factorization.

111201021100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384532.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111201021100221 its reverse (122001120102111), we get a palindrome (233202141202332).

The spelling of 111201021100221 in words is "one hundred eleven trillion, two hundred one billion, twenty-one million, one hundred thousand, two hundred twenty-one".