11201220241 has 2 divisors, whose sum is σ = 11201220242. Its totient is φ = 11201220240.

The previous prime is 11201220211. The next prime is 11201220257. The reversal of 11201220241 is 14202210211.

It is an a-pointer prime, because the next prime (11201220257) can be obtained adding 11201220241 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11124131841 + 77088400 = 105471^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201220241 - 2²³ = 11192831633 is a prime.

It is not a weakly prime, because it can be changed into another prime (11201220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600610120 + 5600610121.

It is an arithmetic number, because the mean of its divisors is an integer number (5600610121).

Almost surely, 2^11201220241 is an apocalyptic number.

It is an amenable number.

11201220241 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201220241 is an equidigital number, since it uses as much as digits as its factorization.

11201220241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11201220241 its reverse (14202210211), we get a palindrome (25403430452).

The spelling of 11201220241 in words is "eleven billion, two hundred one million, two hundred twenty thousand, two hundred forty-one".