110221310021 has 2 divisors, whose sum is σ = 110221310022. Its totient is φ = 110221310020.

The previous prime is 110221310009. The next prime is 110221310081. The reversal of 110221310021 is 120013122011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76750607521 + 33470702500 = 277039^2 + 182950^2 .

It is a cyclic number.

It is not a de Polignac number, because 110221310021 - 2³⁴ = 93041440837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110221309978 and 110221310005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110221310081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110655010 + 55110655011.

It is an arithmetic number, because the mean of its divisors is an integer number (55110655011).

Almost surely, 2^110221310021 is an apocalyptic number.

It is an amenable number.

110221310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110221310021 is an equidigital number, since it uses as much as digits as its factorization.

110221310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 110221310021 its reverse (120013122011), we get a palindrome (230234432032).

The spelling of 110221310021 in words is "one hundred ten billion, two hundred twenty-one million, three hundred ten thousand, twenty-one".