111021112201 has 4 divisors (see below), whose sum is σ = 111056824900. Its totient is φ = 110985399504.

The previous prime is 111021112187. The next prime is 111021112249. The reversal of 111021112201 is 102211120111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48498610176 + 62522502025 = 220224^2 + 250045^2 .

It is a cyclic number.

It is not a de Polignac number, because 111021112201 - 2⁷ = 111021112073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021112261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17851686 + ... + 17857903.

It is an arithmetic number, because the mean of its divisors is an integer number (27764206225).

Almost surely, 2^111021112201 is an apocalyptic number.

It is an amenable number.

111021112201 is a deficient number, since it is larger than the sum of its proper divisors (35712699).

111021112201 is an equidigital number, since it uses as much as digits as its factorization.

111021112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35712698.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111021112201 its reverse (102211120111), we get a palindrome (213232232312).

The spelling of 111021112201 in words is "one hundred eleven billion, twenty-one million, one hundred twelve thousand, two hundred one".