2021021333113 has 4 divisors (see below), whose sum is σ = 2090711723940. Its totient is φ = 1951330942288.

The previous prime is 2021021333101. The next prime is 2021021333137. The reversal of 2021021333113 is 3113331201202.

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 409815068224 + 1611206264889 = 640168^2 + 1269333^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2021021333113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021021333173) 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, 34845195370 + ... + 34845195427.

It is an arithmetic number, because the mean of its divisors is an integer number (522677930985).

Almost surely, 2^{2021021333113} is an apocalyptic number.

It is an amenable number.

2021021333113 is a deficient number, since it is larger than the sum of its proper divisors (69690390827).

2021021333113 is an equidigital number, since it uses as much as digits as its factorization.

2021021333113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69690390826.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2021021333113 its reverse (3113331201202), we get a palindrome (5134352534315).

The spelling of 2021021333113 in words is "two trillion, twenty-one billion, twenty-one million, three hundred thirty-three thousand, one hundred thirteen".