20001122111263 has 2 divisors, whose sum is σ = 20001122111264. Its totient is φ = 20001122111262.

The previous prime is 20001122111237. The next prime is 20001122111351. The reversal of 20001122111263 is 36211122110002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001122111263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001122111363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000561055631 + 10000561055632.

It is an arithmetic number, because the mean of its divisors is an integer number (10000561055632).

Almost surely, 2^{20001122111263} is an apocalyptic number.

20001122111263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001122111263 is an equidigital number, since it uses as much as digits as its factorization.

20001122111263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20001122111263 its reverse (36211122110002), we get a palindrome (56212244221265).

The spelling of 20001122111263 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred sixty-three".