2021320312113 has 32 divisors (see below), whose sum is σ = 2860271585280. Its totient is φ = 1266963061760.

The previous prime is 2021320312079. The next prime is 2021320312139. The reversal of 2021320312113 is 3112130231202.

It is a cyclic number.

It is not a de Polignac number, because 2021320312113 - 2⁶ = 2021320312049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021320312113.

It is not an unprimeable number, because it can be changed into a prime (2021320312163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42448948 + ... + 42496538.

It is an arithmetic number, because the mean of its divisors is an integer number (89383487040).

Almost surely, 2^{2021320312113} is an apocalyptic number.

2021320312113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2021320312113 is a deficient number, since it is larger than the sum of its proper divisors (838951273167).

2021320312113 is a wasteful number, since it uses less digits than its factorization.

2021320312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58109.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2021320312113 its reverse (3112130231202), we get a palindrome (5133450543315).

The spelling of 2021320312113 in words is "two trillion, twenty-one billion, three hundred twenty million, three hundred twelve thousand, one hundred thirteen".