11031121121 has 8 divisors (see below), whose sum is σ = 11143857000. Its totient is φ = 10918454400.

The previous prime is 11031121117. The next prime is 11031121139. The reversal of 11031121121 is 12112113011.

It can be written as a sum of positive squares in 4 ways, for example, as 5000045521 + 6031075600 = 70711^2 + 77660^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11031121121 - 2² = 11031121117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031121096 and 11031121105.

It is not an unprimeable number, because it can be changed into a prime (11031121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340955 + ... + 371903.

It is an arithmetic number, because the mean of its divisors is an integer number (1392982125).

Almost surely, 2^11031121121 is an apocalyptic number.

It is an amenable number.

11031121121 is a deficient number, since it is larger than the sum of its proper divisors (112735879).

11031121121 is a wasteful number, since it uses less digits than its factorization.

11031121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34579.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11031121121 its reverse (12112113011), we get a palindrome (23143234132).

The spelling of 11031121121 in words is "eleven billion, thirty-one million, one hundred twenty-one thousand, one hundred twenty-one".