110221022001221 has 2 divisors, whose sum is σ = 110221022001222. Its totient is φ = 110221022001220.

The previous prime is 110221022001191. The next prime is 110221022001241. The reversal of 110221022001221 is 122100220122011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88862861424100 + 21358160577121 = 9426710^2 + 4621489^2 .

It is an emirp because it is prime and its reverse (122100220122011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110221022001221 - 2¹⁸ = 110221021739077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 110221022001221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110221022001241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110511000610 + 55110511000611.

It is an arithmetic number, because the mean of its divisors is an integer number (55110511000611).

Almost surely, 2^{110221022001221} is an apocalyptic number.

It is an amenable number.

110221022001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110221022001221 is an equidigital number, since it uses as much as digits as its factorization.

110221022001221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 110221022001221 its reverse (122100220122011), we get a palindrome (232321242123232).

The spelling of 110221022001221 in words is "one hundred ten trillion, two hundred twenty-one billion, twenty-two million, one thousand, two hundred twenty-one".