2021311310111 has 2 divisors, whose sum is σ = 2021311310112. Its totient is φ = 2021311310110.

The previous prime is 2021311310089. The next prime is 2021311310149. The reversal of 2021311310111 is 1110131131202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021311310111 - 2⁶ = 2021311310047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021311310111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021311310611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010655655055 + 1010655655056.

It is an arithmetic number, because the mean of its divisors is an integer number (1010655655056).

Almost surely, 2^{2021311310111} is an apocalyptic number.

2021311310111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021311310111 is an equidigital number, since it uses as much as digits as its factorization.

2021311310111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 2021311310111 its reverse (1110131131202), we get a palindrome (3131442441313).

The spelling of 2021311310111 in words is "two trillion, twenty-one billion, three hundred eleven million, three hundred ten thousand, one hundred eleven".