11121101121 has 16 divisors (see below), whose sum is σ = 15972446336. Its totient is φ = 6842174976.

The previous prime is 11121101111. The next prime is 11121101149. The reversal of 11121101121 is 12110112111.

It is not a de Polignac number, because 11121101121 - 2⁷ = 11121100993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121101097 and 11121101106.

It is not an unprimeable number, because it can be changed into a prime (11121101111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151281 + ... + 212433.

It is an arithmetic number, because the mean of its divisors is an integer number (998277896).

Almost surely, 2^11121101121 is an apocalyptic number.

It is an amenable number.

11121101121 is a deficient number, since it is larger than the sum of its proper divisors (4851345215).

11121101121 is a wasteful number, since it uses less digits than its factorization.

11121101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65832.

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

Adding to 11121101121 its reverse (12110112111), we get a palindrome (23231213232).

It can be divided in two parts, 11 and 121101121, that multiplied together give a palindrome (1332112331).

The spelling of 11121101121 in words is "eleven billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty-one".