11211200200121 has 8 divisors (see below), whose sum is σ = 12280016446920. Its totient is φ = 10187865495808.

The previous prime is 11211200200069. The next prime is 11211200200147. The reversal of 11211200200121 is 12100200211211.

It can be written as a sum of positive squares in 4 ways, for example, as 5791429958521 + 5419770241600 = 2406539^2 + 2328040^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11211200200121 - 2¹⁰ = 11211200199097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211200200096 and 11211200200105.

It is not an unprimeable number, because it can be changed into a prime (11211200200171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11370385106 + ... + 11370386091.

It is an arithmetic number, because the mean of its divisors is an integer number (1535002055865).

Almost surely, 2^{11211200200121} is an apocalyptic number.

It is an amenable number.

11211200200121 is a deficient number, since it is larger than the sum of its proper divisors (1068816246799).

11211200200121 is a wasteful number, since it uses less digits than its factorization.

11211200200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22740771243.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211200200121 its reverse (12100200211211), we get a palindrome (23311400411332).

The spelling of 11211200200121 in words is "eleven trillion, two hundred eleven billion, two hundred million, two hundred thousand, one hundred twenty-one".