111102200222221 has 4 divisors (see below), whose sum is σ = 119648523316252. Its totient is φ = 102555877128192.

The previous prime is 111102200222159. The next prime is 111102200222261. The reversal of 111102200222221 is 122222002201111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21400199821225 + 89702000400996 = 4626035^2 + 9471114^2 .

It is a cyclic number.

It is not a de Polignac number, because 111102200222221 - 2¹⁹ = 111102199697933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102200222261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273161546996 + ... + 4273161547021.

It is an arithmetic number, because the mean of its divisors is an integer number (29912130829063).

Almost surely, 2^{111102200222221} is an apocalyptic number.

It is an amenable number.

111102200222221 is a deficient number, since it is larger than the sum of its proper divisors (8546323094031).

111102200222221 is an equidigital number, since it uses as much as digits as its factorization.

111102200222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546323094030.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111102200222221 its reverse (122222002201111), we get a palindrome (233324202423332).

The spelling of 111102200222221 in words is "one hundred eleven trillion, one hundred two billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".