111120101221201 has 4 divisors (see below), whose sum is σ = 111120124003252. Its totient is φ = 111120078439152.

The previous prime is 111120101221163. The next prime is 111120101221229. The reversal of 111120101221201 is 102122101021111.

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 64061598814801 + 47058502406400 = 8003849^2 + 6859920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111120101221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111120101221301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779790 + ... + 14928103.

It is an arithmetic number, because the mean of its divisors is an integer number (27780031000813).

Almost surely, 2^{111120101221201} is an apocalyptic number.

It is an amenable number.

111120101221201 is a deficient number, since it is larger than the sum of its proper divisors (22782051).

111120101221201 is an equidigital number, since it uses as much as digits as its factorization.

111120101221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22782050.

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

Adding to 111120101221201 its reverse (102122101021111), we get a palindrome (213242202242312).

The spelling of 111120101221201 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred one million, two hundred twenty-one thousand, two hundred one".