11011211121 has 8 divisors (see below), whose sum is σ = 14692683904. Its totient is φ = 7335272880.

The previous prime is 11011211069. The next prime is 11011211131. The reversal of 11011211121 is 12111211011.

11011211121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11011211121 - 2¹⁴ = 11011194737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011211097 and 11011211106.

It is not an unprimeable number, because it can be changed into a prime (11011211131) 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 7 ways as a sum of consecutive naturals, for example, 1378990 + ... + 1386951.

It is an arithmetic number, because the mean of its divisors is an integer number (1836585488).

Almost surely, 2^11011211121 is an apocalyptic number.

It is an amenable number.

11011211121 is a deficient number, since it is larger than the sum of its proper divisors (3681472783).

11011211121 is a wasteful number, since it uses less digits than its factorization.

11011211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767271.

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

Adding to 11011211121 its reverse (12111211011), we get a palindrome (23122422132).

The spelling of 11011211121 in words is "eleven billion, eleven million, two hundred eleven thousand, one hundred twenty-one".