20201100001111 has 2 divisors, whose sum is σ = 20201100001112. Its totient is φ = 20201100001110.

The previous prime is 20201100001097. The next prime is 20201100001157. The reversal of 20201100001111 is 11110000110202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201100001111 - 2⁵ = 20201100001079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201100001711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100550000555 + 10100550000556.

It is an arithmetic number, because the mean of its divisors is an integer number (10100550000556).

Almost surely, 2^{20201100001111} is an apocalyptic number.

20201100001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201100001111 is an equidigital number, since it uses as much as digits as its factorization.

20201100001111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20201100001111 its reverse (11110000110202), we get a palindrome (31311100111313).

The spelling of 20201100001111 in words is "twenty trillion, two hundred one billion, one hundred million, one thousand, one hundred eleven".