2021262843 has 4 divisors (see below), whose sum is σ = 2695017128. Its totient is φ = 1347508560.

The previous prime is 2021262823. The next prime is 2021262847. The reversal of 2021262843 is 3482621202.

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

It is not a de Polignac number, because 2021262843 - 2⁶ = 2021262779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021262843.

It is not an unprimeable number, because it can be changed into a prime (2021262847) 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, 336877138 + ... + 336877143.

It is an arithmetic number, because the mean of its divisors is an integer number (673754282).

Almost surely, 2^2021262843 is an apocalyptic number.

2021262843 is a deficient number, since it is larger than the sum of its proper divisors (673754285).

2021262843 is an equidigital number, since it uses as much as digits as its factorization.

2021262843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673754284.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2021262843 is about 44958.4568574145. The cubic root of 2021262843 is about 1264.3702371329.

The spelling of 2021262843 in words is "two billion, twenty-one million, two hundred sixty-two thousand, eight hundred forty-three".