111722201 has 4 divisors (see below), whose sum is σ = 116579712. Its totient is φ = 106864692.

The previous prime is 111722173. The next prime is 111722257. The reversal of 111722201 is 102227111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111722201 - 2¹⁰ = 111721177 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 111722201.

It is not an unprimeable number, because it can be changed into a prime (111722291) 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, 2428721 + ... + 2428766.

It is an arithmetic number, because the mean of its divisors is an integer number (29144928).

Almost surely, 2^111722201 is an apocalyptic number.

It is an amenable number.

111722201 is a deficient number, since it is larger than the sum of its proper divisors (4857511).

111722201 is an equidigital number, since it uses as much as digits as its factorization.

111722201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857510.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 111722201 is about 10569.8723265705. The cubic root of 111722201 is about 481.6295900761.

Adding to 111722201 its reverse (102227111), we get a palindrome (213949312).

The spelling of 111722201 in words is "one hundred eleven million, seven hundred twenty-two thousand, two hundred one".