111012201 has 10 divisors (see below), whose sum is σ = 165833162. Its totient is φ = 74008080.

The previous prime is 111012199. The next prime is 111012221. The reversal of 111012201 is 102210111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109746576 + 1265625 = 10476^2 + 1125^2 .

It is not a de Polignac number, because 111012201 - 2¹ = 111012199 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 (111012221) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 685180 + ... + 685341.

Almost surely, 2^111012201 is an apocalyptic number.

It is an amenable number.

111012201 is a deficient number, since it is larger than the sum of its proper divisors (54820961).

111012201 is an equidigital number, since it uses as much as digits as its factorization.

111012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370533 (or 1370524 counting only the distinct ones).

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

The square root of 111012201 is about 10536.2327707772. The cubic root of 111012201 is about 480.6071613534.

Adding to 111012201 its reverse (102210111), we get a palindrome (213222312).

The spelling of 111012201 in words is "one hundred eleven million, twelve thousand, two hundred one".