21110300120233 has 2 divisors, whose sum is σ = 21110300120234. Its totient is φ = 21110300120232.

The previous prime is 21110300120167. The next prime is 21110300120251. The reversal of 21110300120233 is 33202100301112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19465011614889 + 1645288505344 = 4411917^2 + 1282688^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110300120233 - 2¹⁷ = 21110299989161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21110300120233.

It is not a weakly prime, because it can be changed into another prime (21110300120033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555150060116 + 10555150060117.

It is an arithmetic number, because the mean of its divisors is an integer number (10555150060117).

Almost surely, 2^{21110300120233} is an apocalyptic number.

It is an amenable number.

21110300120233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110300120233 is an equidigital number, since it uses as much as digits as its factorization.

21110300120233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21110300120233 its reverse (33202100301112), we get a palindrome (54312400421345).

The spelling of 21110300120233 in words is "twenty-one trillion, one hundred ten billion, three hundred million, one hundred twenty thousand, two hundred thirty-three".