2113113440213 has 4 divisors (see below), whose sum is σ = 2185979420940. Its totient is φ = 2040247459488.

The previous prime is 2113113440203. The next prime is 2113113440219. The reversal of 2113113440213 is 3120443113112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1143751108369 + 969362331844 = 1069463^2 + 984562^2 .

It is not a de Polignac number, because 2113113440213 - 2¹⁶ = 2113113374677 is a prime.

It is a super-2 number, since 2×2113113440213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113113440219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36432990320 + ... + 36432990377.

It is an arithmetic number, because the mean of its divisors is an integer number (546494855235).

Almost surely, 2^{2113113440213} is an apocalyptic number.

It is an amenable number.

2113113440213 is a deficient number, since it is larger than the sum of its proper divisors (72865980727).

2113113440213 is an equidigital number, since it uses as much as digits as its factorization.

2113113440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72865980726.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 2113113440213 its reverse (3120443113112), we get a palindrome (5233556553325).

The spelling of 2113113440213 in words is "two trillion, one hundred thirteen billion, one hundred thirteen million, four hundred forty thousand, two hundred thirteen".