11131202121 has 8 divisors (see below), whose sum is σ = 15983264640. Its totient is φ = 6849970512.

The previous prime is 11131202099. The next prime is 11131202123. The reversal of 11131202121 is 12120213111.

11131202121 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 11131202121 - 2⁶ = 11131202057 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 11131202121.

It is not an unprimeable number, because it can be changed into a prime (11131202123) 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, 142707681 + ... + 142707758.

It is an arithmetic number, because the mean of its divisors is an integer number (1997908080).

Almost surely, 2^11131202121 is an apocalyptic number.

It is an amenable number.

11131202121 is a deficient number, since it is larger than the sum of its proper divisors (4852062519).

11131202121 is a wasteful number, since it uses less digits than its factorization.

11131202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285415455.

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

Adding to 11131202121 its reverse (12120213111), we get a palindrome (23251415232).

The spelling of 11131202121 in words is "eleven billion, one hundred thirty-one million, two hundred two thousand, one hundred twenty-one".