2021003113313 has 4 divisors (see below), whose sum is σ = 2022082134468. Its totient is φ = 2019924092160.

The previous prime is 2021003113303. The next prime is 2021003113321. The reversal of 2021003113313 is 3133113001202.

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 252613796449 + 1768389316864 = 502607^2 + 1329808^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021003113313 - 2¹⁴ = 2021003096929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021003113303) 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, 539507768 + ... + 539511513.

It is an arithmetic number, because the mean of its divisors is an integer number (505520533617).

Almost surely, 2^{2021003113313} is an apocalyptic number.

It is an amenable number.

2021003113313 is a deficient number, since it is larger than the sum of its proper divisors (1079021155).

2021003113313 is a wasteful number, since it uses less digits than its factorization.

2021003113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079021154.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 2021003113313 its reverse (3133113001202), we get a palindrome (5154116114515).

The spelling of 2021003113313 in words is "two trillion, twenty-one billion, three million, one hundred thirteen thousand, three hundred thirteen".