110121221102021 has 2 divisors, whose sum is σ = 110121221102022. Its totient is φ = 110121221102020.

The previous prime is 110121221101979. The next prime is 110121221102111. The reversal of 110121221102021 is 120201122121011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105279399330625 + 4841821771396 = 10260575^2 + 2200414^2 .

It is a cyclic number.

It is not a de Polignac number, because 110121221102021 - 2¹⁰ = 110121221100997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110121221104021) 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, 55060610551010 + 55060610551011.

It is an arithmetic number, because the mean of its divisors is an integer number (55060610551011).

Almost surely, 2^{110121221102021} is an apocalyptic number.

It is an amenable number.

110121221102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110121221102021 is an equidigital number, since it uses as much as digits as its factorization.

110121221102021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 110121221102021 its reverse (120201122121011), we get a palindrome (230322343223032).

The spelling of 110121221102021 in words is "one hundred ten trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred two thousand, twenty-one".