111020201 has 4 divisors (see below), whose sum is σ = 112425600. Its totient is φ = 109614804.

The previous prime is 111020191. The next prime is 111020209. The reversal of 111020201 is 102020111.

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 111020201 - 2¹⁰ = 111019177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020209) 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, 702581 + ... + 702738.

It is an arithmetic number, because the mean of its divisors is an integer number (28106400).

Almost surely, 2^111020201 is an apocalyptic number.

It is an amenable number.

111020201 is a deficient number, since it is larger than the sum of its proper divisors (1405399).

111020201 is an equidigital number, since it uses as much as digits as its factorization.

111020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405398.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 111020201 is about 10536.6124062718. The cubic root of 111020201 is about 480.6187059251.

Adding to 111020201 its reverse (102020111), we get a palindrome (213040312).

It can be divided in two parts, 11 and 1020201, that multiplied together give a palindrome (11222211).

The spelling of 111020201 in words is "one hundred eleven million, twenty thousand, two hundred one".