2113320121 has 4 divisors (see below), whose sum is σ = 2305440144. Its totient is φ = 1921200100.

The previous prime is 2113320119. The next prime is 2113320149. The reversal of 2113320121 is 1210233112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2113320121 - 2¹ = 2113320119 is a prime.

It is a super-2 number, since 2×2113320121² = 8932243867646909282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113320095 and 2113320104.

It is not an unprimeable number, because it can be changed into a prime (2113320191) 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, 96059995 + ... + 96060016.

It is an arithmetic number, because the mean of its divisors is an integer number (576360036).

Almost surely, 2^2113320121 is an apocalyptic number.

It is an amenable number.

2113320121 is a deficient number, since it is larger than the sum of its proper divisors (192120023).

2113320121 is a wasteful number, since it uses less digits than its factorization.

2113320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192120022.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2113320121 is about 45970.8616517028. The cubic root of 2113320121 is about 1283.2809953506.

Adding to 2113320121 its reverse (1210233112), we get a palindrome (3323553233).

The spelling of 2113320121 in words is "two billion, one hundred thirteen million, three hundred twenty thousand, one hundred twenty-one".