111102201 has 24 divisors (see below), whose sum is σ = 183709760. Its totient is φ = 63382176.

The previous prime is 111102197. The next prime is 111102209. The reversal of 111102201 is 102201111.

It is a happy number.

It is not a de Polignac number, because 111102201 - 2² = 111102197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111102209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53091 + ... + 55143.

Almost surely, 2^111102201 is an apocalyptic number.

It is an amenable number.

111102201 is a deficient number, since it is larger than the sum of its proper divisors (72607559).

111102201 is a wasteful number, since it uses less digits than its factorization.

111102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 111102201 is about 10540.5028817415. The cubic root of 111102201 is about 480.7370058217.

Adding to 111102201 its reverse (102201111), we get a palindrome (213303312).

It can be divided in two parts, 111 and 102201, that multiplied together give a palindrome (11344311).

The spelling of 111102201 in words is "one hundred eleven million, one hundred two thousand, two hundred one".