2113324440021 has 12 divisors (see below), whose sum is σ = 3052642907340. Its totient is φ = 1408853808960.

The previous prime is 2113324439987. The next prime is 2113324440077. The reversal of 2113324440021 is 1200444233112.

2113324440021 is a `hidden beast` number, since 2 + 1 + 13 + 3 + 244 + 400 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1571289827121 + 542034612900 = 1253511^2 + 736230^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2113324440021 is a prime.

It is a super-2 number, since 2×2113324440021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113324440421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1965456 + ... + 2844233.

It is an arithmetic number, because the mean of its divisors is an integer number (254386908945).

Almost surely, 2^{2113324440021} is an apocalyptic number.

It is an amenable number.

2113324440021 is a deficient number, since it is larger than the sum of its proper divisors (939318467319).

2113324440021 is a wasteful number, since it uses less digits than its factorization.

2113324440021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858516 (or 4858513 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 2113324440021 its reverse (1200444233112), we get a palindrome (3313768673133).

The spelling of 2113324440021 in words is "two trillion, one hundred thirteen billion, three hundred twenty-four million, four hundred forty thousand, twenty-one".