11201210120121 has 16 divisors (see below), whose sum is σ = 17181547158528. Its totient is φ = 6358302810000.

The previous prime is 11201210120053. The next prime is 11201210120123. The reversal of 11201210120121 is 12102101210211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11201210120121 is a prime.

It is a super-2 number, since 2×11201210120121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11201210120121.

It is not an unprimeable number, because it can be changed into a prime (11201210120123) 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, 1766192055 + ... + 1766198396.

It is an arithmetic number, because the mean of its divisors is an integer number (1073846697408).

Almost surely, 2^{11201210120121} is an apocalyptic number.

It is an amenable number.

11201210120121 is a deficient number, since it is larger than the sum of its proper divisors (5980337038407).

11201210120121 is a wasteful number, since it uses less digits than its factorization.

11201210120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532390612.

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

Adding to 11201210120121 its reverse (12102101210211), we get a palindrome (23303311330332).

The spelling of 11201210120121 in words is "eleven trillion, two hundred one billion, two hundred ten million, one hundred twenty thousand, one hundred twenty-one".