11121111201 has 12 divisors (see below), whose sum is σ = 15239746032. Its totient is φ = 7213691088.

The previous prime is 11121111173. The next prime is 11121111247. The reversal of 11121111201 is 10211112111.

11121111201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11121111201 - 2⁶ = 11121111137 is a prime.

It is a super-2 number, since 2×11121111201² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11121111251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1349815 + ... + 1358028.

It is an arithmetic number, because the mean of its divisors is an integer number (1269978836).

Almost surely, 2^11121111201 is an apocalyptic number.

It is an amenable number.

11121111201 is a deficient number, since it is larger than the sum of its proper divisors (4118634831).

11121111201 is an equidigital number, since it uses as much as digits as its factorization.

11121111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707920 (or 2707883 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11121111201 its reverse (10211112111), we get a palindrome (21332223312).

It can be divided in two parts, 11121 and 111201, that multiplied together give a palindrome (1236666321).

The spelling of 11121111201 in words is "eleven billion, one hundred twenty-one million, one hundred eleven thousand, two hundred one".