111002101 has 12 divisors (see below), whose sum is σ = 129433548. Its totient is φ = 94917312.

The previous prime is 111002077. The next prime is 111002107. The reversal of 111002101 is 101200111.

It can be written as a sum of positive squares in 2 ways, for example, as 95082001 + 15920100 = 9751^2 + 3990^2 .

It is not a de Polignac number, because 111002101 - 2⁷ = 111001973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19915 + ... + 24871.

It is an arithmetic number, because the mean of its divisors is an integer number (10786129).

Almost surely, 2^111002101 is an apocalyptic number.

It is an amenable number.

111002101 is a deficient number, since it is larger than the sum of its proper divisors (18431447).

111002101 is an equidigital number, since it uses as much as digits as its factorization.

111002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428 (or 5421 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 111002101 is about 10535.7534614284. The cubic root of 111002101 is about 480.5925855395.

Adding to 111002101 its reverse (101200111), we get a palindrome (212202212).

The spelling of 111002101 in words is "one hundred eleven million, two thousand, one hundred one".