20110221220241 has 2 divisors, whose sum is σ = 20110221220242. Its totient is φ = 20110221220240.

The previous prime is 20110221220163. The next prime is 20110221220261. The reversal of 20110221220241 is 14202212201102.

It is a happy number.

It is an a-pointer prime, because the next prime (20110221220261) can be obtained adding 20110221220241 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20027907315025 + 82313905216 = 4475255^2 + 286904^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110221220241 - 2¹⁰ = 20110221219217 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110221220261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055110610120 + 10055110610121.

It is an arithmetic number, because the mean of its divisors is an integer number (10055110610121).

Almost surely, 2^{20110221220241} is an apocalyptic number.

It is an amenable number.

20110221220241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110221220241 is an equidigital number, since it uses as much as digits as its factorization.

20110221220241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20110221220241 its reverse (14202212201102), we get a palindrome (34312433421343).

The spelling of 20110221220241 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, two hundred forty-one".