11201000002121 has 4 divisors (see below), whose sum is σ = 11220685415700. Its totient is φ = 11181314588544.

The previous prime is 11201000002099. The next prime is 11201000002141. The reversal of 11201000002121 is 12120000010211.

11201000002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5038516472896 + 6162483529225 = 2244664^2 + 2482435^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201000002121 - 2²² = 11200995807817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201000002141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9842705936 + ... + 9842707073.

It is an arithmetic number, because the mean of its divisors is an integer number (2805171353925).

Almost surely, 2^{11201000002121} is an apocalyptic number.

It is an amenable number.

11201000002121 is a deficient number, since it is larger than the sum of its proper divisors (19685413579).

11201000002121 is an equidigital number, since it uses as much as digits as its factorization.

11201000002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19685413578.

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

Adding to 11201000002121 its reverse (12120000010211), we get a palindrome (23321000012332).

The spelling of 11201000002121 in words is "eleven trillion, two hundred one billion, two thousand, one hundred twenty-one".