11211032121 has 16 divisors (see below), whose sum is σ = 15141826560. Its totient is φ = 7377186960.

The previous prime is 11211032093. The next prime is 11211032171. The reversal of 11211032121 is 12123011211.

11211032121 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 11211032121 - 2⁵ = 11211032089 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211032121.

It is not an unprimeable number, because it can be changed into a prime (11211032171) 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 15 ways as a sum of consecutive naturals, for example, 1235226 + ... + 1244268.

It is an arithmetic number, because the mean of its divisors is an integer number (946364160).

Almost surely, 2^11211032121 is an apocalyptic number.

It is an amenable number.

11211032121 is a deficient number, since it is larger than the sum of its proper divisors (3930794439).

11211032121 is an equidigital number, since it uses as much as digits as its factorization.

11211032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14356.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11211032121 its reverse (12123011211), we get a palindrome (23334043332).

The spelling of 11211032121 in words is "eleven billion, two hundred eleven million, thirty-two thousand, one hundred twenty-one".