2113331323021 has 2 divisors, whose sum is σ = 2113331323022. Its totient is φ = 2113331323020.

The previous prime is 2113331322989. The next prime is 2113331323031. The reversal of 2113331323021 is 1203231333112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2050011149796 + 63320173225 = 1431786^2 + 251635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113331323021 - 2⁵ = 2113331322989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113331323031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056665661510 + 1056665661511.

It is an arithmetic number, because the mean of its divisors is an integer number (1056665661511).

Almost surely, 2^{2113331323021} is an apocalyptic number.

It is an amenable number.

2113331323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113331323021 is an equidigital number, since it uses as much as digits as its factorization.

2113331323021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2113331323021 its reverse (1203231333112), we get a palindrome (3316562656133).

The spelling of 2113331323021 in words is "two trillion, one hundred thirteen billion, three hundred thirty-one million, three hundred twenty-three thousand, twenty-one".