20001122111963 has 2 divisors, whose sum is σ = 20001122111964. Its totient is φ = 20001122111962.

The previous prime is 20001122111879. The next prime is 20001122112029. The reversal of 20001122111963 is 36911122110002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001122111963 - 2¹⁴ = 20001122095579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20001122111263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000561055981 + 10000561055982.

It is an arithmetic number, because the mean of its divisors is an integer number (10000561055982).

Almost surely, 2^{20001122111963} is an apocalyptic number.

20001122111963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001122111963 is an equidigital number, since it uses as much as digits as its factorization.

20001122111963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 20001122111963 its reverse (36911122110002), we get a palindrome (56912244221965).

The spelling of 20001122111963 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, nine hundred sixty-three".