110442550021 has 2 divisors, whose sum is σ = 110442550022. Its totient is φ = 110442550020.

The previous prime is 110442550007. The next prime is 110442550037. The reversal of 110442550021 is 120055244011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108050264100 + 2392285921 = 328710^2 + 48911^2 .

It is an emirp because it is prime and its reverse (120055244011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110442550021 - 2¹⁷ = 110442418949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110442554021) 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, 55221275010 + 55221275011.

It is an arithmetic number, because the mean of its divisors is an integer number (55221275011).

Almost surely, 2^110442550021 is an apocalyptic number.

It is an amenable number.

110442550021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110442550021 is an equidigital number, since it uses as much as digits as its factorization.

110442550021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 110442550021 its reverse (120055244011), we get a palindrome (230497794032).

The spelling of 110442550021 in words is "one hundred ten billion, four hundred forty-two million, five hundred fifty thousand, twenty-one".