2021020441 has 4 divisors (see below), whose sum is σ = 2204749584. Its totient is φ = 1837291300.

The previous prime is 2021020409. The next prime is 2021020451. The reversal of 2021020441 is 1440201202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021020441 - 2⁵ = 2021020409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021020451) 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, 91864555 + ... + 91864576.

It is an arithmetic number, because the mean of its divisors is an integer number (551187396).

Almost surely, 2^2021020441 is an apocalyptic number.

It is an amenable number.

2021020441 is a deficient number, since it is larger than the sum of its proper divisors (183729143).

2021020441 is a wasteful number, since it uses less digits than its factorization.

2021020441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183729142.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2021020441 is about 44955.7609322765. The cubic root of 2021020441 is about 1264.3196914838.

Adding to 2021020441 its reverse (1440201202), we get a palindrome (3461221643).

The spelling of 2021020441 in words is "two billion, twenty-one million, twenty thousand, four hundred forty-one".