111112011201221 has 8 divisors (see below), whose sum is σ = 111868153729920. Its totient is φ = 110357728803072.

The previous prime is 111112011201197. The next prime is 111112011201239. The reversal of 111112011201221 is 122102110211111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111112011201221 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 111112011201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112011261221) 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, 464912765 + ... + 465151698.

It is an arithmetic number, because the mean of its divisors is an integer number (13983519216240).

Almost surely, 2^{111112011201221} is an apocalyptic number.

It is an amenable number.

111112011201221 is a deficient number, since it is larger than the sum of its proper divisors (756142528699).

111112011201221 is an equidigital number, since it uses as much as digits as its factorization.

111112011201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930065275.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111112011201221 its reverse (122102110211111), we get a palindrome (233214121412332).

The spelling of 111112011201221 in words is "one hundred eleven trillion, one hundred twelve billion, eleven million, two hundred one thousand, two hundred twenty-one".