11110221120221 has 2 divisors, whose sum is σ = 11110221120222. Its totient is φ = 11110221120220.

The previous prime is 11110221120211. The next prime is 11110221120281. The reversal of 11110221120221 is 12202112201111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9758663740996 + 1351557379225 = 3123886^2 + 1162565^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110221120221 - 2⁴² = 6712174609117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11110221120221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110221120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555110560110 + 5555110560111.

It is an arithmetic number, because the mean of its divisors is an integer number (5555110560111).

Almost surely, 2^{11110221120221} is an apocalyptic number.

It is an amenable number.

11110221120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110221120221 is an equidigital number, since it uses as much as digits as its factorization.

11110221120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11110221120221 its reverse (12202112201111), we get a palindrome (23312333321332).

The spelling of 11110221120221 in words is "eleven trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-one".