20201102020111 has 2 divisors, whose sum is σ = 20201102020112. Its totient is φ = 20201102020110.

The previous prime is 20201102020103. The next prime is 20201102020159. The reversal of 20201102020111 is 11102020110202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201102020111 - 2³ = 20201102020103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20201102020091 and 20201102020100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201102020511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100551010055 + 10100551010056.

It is an arithmetic number, because the mean of its divisors is an integer number (10100551010056).

Almost surely, 2^{20201102020111} is an apocalyptic number.

20201102020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201102020111 is an equidigital number, since it uses as much as digits as its factorization.

20201102020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20201102020111 its reverse (11102020110202), we get a palindrome (31303122130313).

The spelling of 20201102020111 in words is "twenty trillion, two hundred one billion, one hundred two million, twenty thousand, one hundred eleven".