2021000401 has 16 divisors (see below), whose sum is σ = 2422108800. Its totient is φ = 1649628288.

The previous prime is 2021000383. The next prime is 2021000407. The reversal of 2021000401 is 1040001202.

It is not a de Polignac number, because 2021000401 - 2¹⁷ = 2020869329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021000407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53371 + ... + 83008.

It is an arithmetic number, because the mean of its divisors is an integer number (151381800).

Almost surely, 2^2021000401 is an apocalyptic number.

It is an amenable number.

2021000401 is a deficient number, since it is larger than the sum of its proper divisors (401108399).

2021000401 is a wasteful number, since it uses less digits than its factorization.

2021000401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136488.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2021000401 is about 44955.5380459405. The cubic root of 2021000401 is about 1264.3155125635.

Adding to 2021000401 its reverse (1040001202), we get a palindrome (3061001603).

The spelling of 2021000401 in words is "two billion, twenty-one million, four hundred one", and thus it is an aban number.