11201002121121 has 16 divisors (see below), whose sum is σ = 15813748234368. Its totient is φ = 7027826976000.

The previous prime is 11201002121117. The next prime is 11201002121131. The reversal of 11201002121121 is 12112120010211.

It is a happy number.

It is not a de Polignac number, because 11201002121121 - 2² = 11201002121117 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 11201002121121.

It is not an unprimeable number, because it can be changed into a prime (11201002121131) 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, 2512885 + ... + 5358786.

It is an arithmetic number, because the mean of its divisors is an integer number (988359264648).

Almost surely, 2^{11201002121121} is an apocalyptic number.

It is an amenable number.

11201002121121 is a deficient number, since it is larger than the sum of its proper divisors (4612746113247).

11201002121121 is a wasteful number, since it uses less digits than its factorization.

11201002121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899592.

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

Adding to 11201002121121 its reverse (12112120010211), we get a palindrome (23313122131332).

The spelling of 11201002121121 in words is "eleven trillion, two hundred one billion, two million, one hundred twenty-one thousand, one hundred twenty-one".