2311011013021 has 2 divisors, whose sum is σ = 2311011013022. Its totient is φ = 2311011013020.

The previous prime is 2311011013013. The next prime is 2311011013027. The reversal of 2311011013021 is 1203101101132.

It is a happy number.

2311011013021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2110087432996 + 200923580025 = 1452614^2 + 448245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311011013021 - 2³ = 2311011013013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311011012986 and 2311011013004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311011013027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155505506510 + 1155505506511.

It is an arithmetic number, because the mean of its divisors is an integer number (1155505506511).

Almost surely, 2^{2311011013021} is an apocalyptic number.

It is an amenable number.

2311011013021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311011013021 is an equidigital number, since it uses as much as digits as its factorization.

2311011013021 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 16.

Adding to 2311011013021 its reverse (1203101101132), we get a palindrome (3514112114153).

The spelling of 2311011013021 in words is "two trillion, three hundred eleven billion, eleven million, thirteen thousand, twenty-one".