11201122020221 has 32 divisors (see below), whose sum is σ = 13379253608448. Its totient is φ = 9168826265280.

The previous prime is 11201122020203. The next prime is 11201122020289. The reversal of 11201122020221 is 12202022110211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201122020221 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 11201122020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201122025221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728141696 + ... + 728157078.

It is an arithmetic number, because the mean of its divisors is an integer number (418101675264).

Almost surely, 2^{11201122020221} is an apocalyptic number.

It is an amenable number.

11201122020221 is a deficient number, since it is larger than the sum of its proper divisors (2178131588227).

11201122020221 is a wasteful number, since it uses less digits than its factorization.

11201122020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22361.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11201122020221 its reverse (12202022110211), we get a palindrome (23403144130432).

The spelling of 11201122020221 in words is "eleven trillion, two hundred one billion, one hundred twenty-two million, twenty thousand, two hundred twenty-one".