2021020243 has 8 divisors (see below), whose sum is σ = 2205483120. Its totient is φ = 1836679680.

The previous prime is 2021020241. The next prime is 2021020247. The reversal of 2021020243 is 3420201202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021020243 - 2¹ = 2021020241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021020241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5871 + ... + 63847.

It is an arithmetic number, because the mean of its divisors is an integer number (275685390).

Almost surely, 2^2021020243 is an apocalyptic number.

2021020243 is a deficient number, since it is larger than the sum of its proper divisors (184462877).

2021020243 is a wasteful number, since it uses less digits than its factorization.

2021020243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61157.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2021020243 is about 44955.7587301115. The cubic root of 2021020243 is about 1264.3196501952.

Adding to 2021020243 its reverse (3420201202), we get a palindrome (5441221445).

The spelling of 2021020243 in words is "two billion, twenty-one million, twenty thousand, two hundred forty-three".