110221220999 has 2 divisors, whose sum is σ = 110221221000. Its totient is φ = 110221220998.

The previous prime is 110221220981. The next prime is 110221221031. The reversal of 110221220999 is 999022122011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (999022122011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110221220999 - 2¹⁶ = 110221155463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110221220939) 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, 55110610499 + 55110610500.

It is an arithmetic number, because the mean of its divisors is an integer number (55110610500).

Almost surely, 2^110221220999 is an apocalyptic number.

110221220999 is a deficient number, since it is larger than the sum of its proper divisors (1).

110221220999 is an equidigital number, since it uses as much as digits as its factorization.

110221220999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

It can be divided in two parts, 1102212 and 20999, that added together give a palindrome (1123211).

The spelling of 110221220999 in words is "one hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-nine".