2113313011421 has 2 divisors, whose sum is σ = 2113313011422. Its totient is φ = 2113313011420.

The previous prime is 2113313011409. The next prime is 2113313011517. The reversal of 2113313011421 is 1241103133112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1939808272900 + 173504738521 = 1392770^2 + 416539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113313011421 - 2²² = 2113308817117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113313011321) 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, 1056656505710 + 1056656505711.

It is an arithmetic number, because the mean of its divisors is an integer number (1056656505711).

Almost surely, 2^{2113313011421} is an apocalyptic number.

It is an amenable number.

2113313011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113313011421 is an equidigital number, since it uses as much as digits as its factorization.

2113313011421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 2113313011421 its reverse (1241103133112), we get a palindrome (3354416144533).

The spelling of 2113313011421 in words is "two trillion, one hundred thirteen billion, three hundred thirteen million, eleven thousand, four hundred twenty-one".