11001202121 has 24 divisors (see below), whose sum is σ = 13880986560. Its totient is φ = 8641557792.

The previous prime is 11001202021. The next prime is 11001202181. The reversal of 11001202121 is 12120210011.

11001202121 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 11001202121 - 2¹⁰ = 11001201097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11001202181) 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 23 ways as a sum of consecutive naturals, for example, 26420 + ... + 150666.

It is an arithmetic number, because the mean of its divisors is an integer number (578374440).

Almost surely, 2^11001202121 is an apocalyptic number.

It is an amenable number.

11001202121 is a deficient number, since it is larger than the sum of its proper divisors (2879784439).

11001202121 is a wasteful number, since it uses less digits than its factorization.

11001202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124413 (or 124406 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11001202121 its reverse (12120210011), we get a palindrome (23121412132).

The spelling of 11001202121 in words is "eleven billion, one million, two hundred two thousand, one hundred twenty-one".