2101020020111 has 2 divisors, whose sum is σ = 2101020020112. Its totient is φ = 2101020020110.

The previous prime is 2101020020069. The next prime is 2101020020147. The reversal of 2101020020111 is 1110200201012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101020020111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101020020092 and 2101020020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101020022111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050510010055 + 1050510010056.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510010056).

Almost surely, 2^{2101020020111} is an apocalyptic number.

2101020020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101020020111 is an equidigital number, since it uses as much as digits as its factorization.

2101020020111 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 2101020020111 its reverse (1110200201012), we get a palindrome (3211220221123).

The spelling of 2101020020111 in words is "two trillion, one hundred one billion, twenty million, twenty thousand, one hundred eleven".