2021066403 has 8 divisors (see below), whose sum is σ = 2853270288. Its totient is φ = 1268120064.

The previous prime is 2021066389. The next prime is 2021066413. The reversal of 2021066403 is 3046601202.

2021066403 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2021066403 - 2⁴ = 2021066387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021066413) 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, 19814326 + ... + 19814427.

It is an arithmetic number, because the mean of its divisors is an integer number (356658786).

Almost surely, 2^2021066403 is an apocalyptic number.

2021066403 is a deficient number, since it is larger than the sum of its proper divisors (832203885).

2021066403 is a wasteful number, since it uses less digits than its factorization.

2021066403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39628773.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2021066403 is about 44956.2721208065. The cubic root of 2021066403 is about 1264.3292757876.

Adding to 2021066403 its reverse (3046601202), we get a palindrome (5067667605).

The spelling of 2021066403 in words is "two billion, twenty-one million, sixty-six thousand, four hundred three".