2021133340231 has 4 divisors (see below), whose sum is σ = 2021139080352. Its totient is φ = 2021127600112.

The previous prime is 2021133340147. The next prime is 2021133340241. The reversal of 2021133340231 is 1320433311202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021133340231 - 2¹¹ = 2021133338183 is a prime.

It is a super-2 number, since 2×2021133340231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021133340196 and 2021133340205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021133340241) 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, 2304790 + ... + 3058483.

It is an arithmetic number, because the mean of its divisors is an integer number (505284770088).

Almost surely, 2^{2021133340231} is an apocalyptic number.

2021133340231 is a deficient number, since it is larger than the sum of its proper divisors (5740121).

2021133340231 is an equidigital number, since it uses as much as digits as its factorization.

2021133340231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740120.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2021133340231 its reverse (1320433311202), we get a palindrome (3341566651433).

The spelling of 2021133340231 in words is "two trillion, twenty-one billion, one hundred thirty-three million, three hundred forty thousand, two hundred thirty-one".