20201102111 has 2 divisors, whose sum is σ = 20201102112. Its totient is φ = 20201102110.

The previous prime is 20201102069. The next prime is 20201102143. The reversal of 20201102111 is 11120110202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201102111 - 2¹⁰ = 20201101087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201102092 and 20201102101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201132111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100551055 + 10100551056.

It is an arithmetic number, because the mean of its divisors is an integer number (10100551056).

Almost surely, 2^20201102111 is an apocalyptic number.

20201102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201102111 is an equidigital number, since it uses as much as digits as its factorization.

20201102111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20201102111 its reverse (11120110202), we get a palindrome (31321212313).

The spelling of 20201102111 in words is "twenty billion, two hundred one million, one hundred two thousand, one hundred eleven".