20211110102143 has 2 divisors, whose sum is σ = 20211110102144. Its totient is φ = 20211110102142.

The previous prime is 20211110102077. The next prime is 20211110102243. The reversal of 20211110102143 is 34120101111202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211110102143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20211110102143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211110102243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105555051071 + 10105555051072.

It is an arithmetic number, because the mean of its divisors is an integer number (10105555051072).

Almost surely, 2^{20211110102143} is an apocalyptic number.

20211110102143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211110102143 is an equidigital number, since it uses as much as digits as its factorization.

20211110102143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20211110102143 its reverse (34120101111202), we get a palindrome (54331211213345).

The spelling of 20211110102143 in words is "twenty trillion, two hundred eleven billion, one hundred ten million, one hundred two thousand, one hundred forty-three".