20100110220643 has 2 divisors, whose sum is σ = 20100110220644. Its totient is φ = 20100110220642.

The previous prime is 20100110220551. The next prime is 20100110220661. The reversal of 20100110220643 is 34602201100102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20100110220643 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100110220143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050055110321 + 10050055110322.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055110322).

Almost surely, 2^{20100110220643} is an apocalyptic number.

20100110220643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100110220643 is an equidigital number, since it uses as much as digits as its factorization.

20100110220643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20100110220643 its reverse (34602201100102), we get a palindrome (54702311320745).

The spelling of 20100110220643 in words is "twenty trillion, one hundred billion, one hundred ten million, two hundred twenty thousand, six hundred forty-three".