11201120202221 has 4 divisors (see below), whose sum is σ = 11201161055712. Its totient is φ = 11201079348732.

The previous prime is 11201120202197. The next prime is 11201120202229. The reversal of 11201120202221 is 12220202110211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201120202221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11201120202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201120202229) 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, 20012681 + ... + 20564766.

It is an arithmetic number, because the mean of its divisors is an integer number (2800290263928).

Almost surely, 2^{11201120202221} is an apocalyptic number.

It is an amenable number.

11201120202221 is a deficient number, since it is larger than the sum of its proper divisors (40853491).

11201120202221 is an equidigital number, since it uses as much as digits as its factorization.

11201120202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40853490.

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

Adding to 11201120202221 its reverse (12220202110211), we get a palindrome (23421322312432).

The spelling of 11201120202221 in words is "eleven trillion, two hundred one billion, one hundred twenty million, two hundred two thousand, two hundred twenty-one".