11210121200121 has 16 divisors (see below), whose sum is σ = 15235145138304. Its totient is φ = 7329372387584.

The previous prime is 11210121200071. The next prime is 11210121200149. The reversal of 11210121200121 is 12100212101211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11210121200121 - 2¹⁵ = 11210121167353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11210121200121.

It is not an unprimeable number, because it can be changed into a prime (11210121200191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14200701 + ... + 14969306.

It is an arithmetic number, because the mean of its divisors is an integer number (952196571144).

Almost surely, 2^{11210121200121} is an apocalyptic number.

It is an amenable number.

11210121200121 is a deficient number, since it is larger than the sum of its proper divisors (4025023938183).

11210121200121 is a wasteful number, since it uses less digits than its factorization.

11210121200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29172480.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11210121200121 its reverse (12100212101211), we get a palindrome (23310333301332).

The spelling of 11210121200121 in words is "eleven trillion, two hundred ten billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".