21110110111033 has 2 divisors, whose sum is σ = 21110110111034. Its totient is φ = 21110110111032.

The previous prime is 21110110111021. The next prime is 21110110111193. The reversal of 21110110111033 is 33011101101112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17478352826944 + 3631757284089 = 4180712^2 + 1905717^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110110111033 - 2¹⁷ = 21110109979961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110110110998 and 21110110111016.

It is not a weakly prime, because it can be changed into another prime (21110110111333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555055055516 + 10555055055517.

It is an arithmetic number, because the mean of its divisors is an integer number (10555055055517).

Almost surely, 2^{21110110111033} is an apocalyptic number.

It is an amenable number.

21110110111033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110110111033 is an equidigital number, since it uses as much as digits as its factorization.

21110110111033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 21110110111033 its reverse (33011101101112), we get a palindrome (54121211212145).

The spelling of 21110110111033 in words is "twenty-one trillion, one hundred ten billion, one hundred ten million, one hundred eleven thousand, thirty-three".