2121113313 has 12 divisors (see below), whose sum is σ = 3342360528. Its totient is φ = 1285523160.

The previous prime is 2121113297. The next prime is 2121113329. The reversal of 2121113313 is 3133111212.

It is an interprime number because it is at equal distance from previous prime (2121113297) and next prime (2121113329).

It is not a de Polignac number, because 2121113313 - 2⁴ = 2121113297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121113213) 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, 10712595 + ... + 10712792.

It is an arithmetic number, because the mean of its divisors is an integer number (278530044).

Almost surely, 2^2121113313 is an apocalyptic number.

It is an amenable number.

2121113313 is a deficient number, since it is larger than the sum of its proper divisors (1221247215).

2121113313 is a wasteful number, since it uses less digits than its factorization.

2121113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21425404 (or 21425401 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2121113313 is about 46055.5459526863. The cubic root of 2121113313 is about 1284.8564921217.

Adding to 2121113313 its reverse (3133111212), we get a palindrome (5254224525).

The spelling of 2121113313 in words is "two billion, one hundred twenty-one million, one hundred thirteen thousand, three hundred thirteen".