11011031121 has 16 divisors (see below), whose sum is σ = 15548122368. Its totient is φ = 6907488000.

The previous prime is 11011031117. The next prime is 11011031149. The reversal of 11011031121 is 12113011011.

It is not a de Polignac number, because 11011031121 - 2² = 11011031117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011031097 and 11011031106.

It is not an unprimeable number, because it can be changed into a prime (11011031111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271816 + ... + 309686.

It is an arithmetic number, because the mean of its divisors is an integer number (971757648).

Almost surely, 2^11011031121 is an apocalyptic number.

It is an amenable number.

11011031121 is a deficient number, since it is larger than the sum of its proper divisors (4537091247).

11011031121 is a wasteful number, since it uses less digits than its factorization.

11011031121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43592.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 11011031121 its reverse (12113011011), we get a palindrome (23124042132).

The spelling of 11011031121 in words is "eleven billion, eleven million, thirty-one thousand, one hundred twenty-one".