111100212222101 has 4 divisors (see below), whose sum is σ = 111102326817804. Its totient is φ = 111098097626400.

The previous prime is 111100212222091. The next prime is 111100212222149. The reversal of 111100212222101 is 101222212001111.

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 106695884596900 + 4404327625201 = 10329370^2 + 2098649^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100212222101 - 2⁶ = 111100212222037 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 111100212222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100212222161) 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, 1057219040 + ... + 1057324121.

It is an arithmetic number, because the mean of its divisors is an integer number (27775581704451).

Almost surely, 2^{111100212222101} is an apocalyptic number.

It is an amenable number.

111100212222101 is a deficient number, since it is larger than the sum of its proper divisors (2114595703).

111100212222101 is an equidigital number, since it uses as much as digits as its factorization.

111100212222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114595702.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111100212222101 its reverse (101222212001111), we get a palindrome (212322424223212).

The spelling of 111100212222101 in words is "one hundred eleven trillion, one hundred billion, two hundred twelve million, two hundred twenty-two thousand, one hundred one".