10020001 has 4 divisors (see below), whose sum is σ = 10031104. Its totient is φ = 10008900.

The previous prime is 10019983. The next prime is 10020013. The reversal of 10020001 is 10002001.

10020001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10020001 - 2⁵ = 10019969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020041) 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, 4065 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (2507776).

Almost surely, 2^10020001 is an apocalyptic number.

It is an amenable number.

10020001 is a deficient number, since it is larger than the sum of its proper divisors (11103).

10020001 is an equidigital number, since it uses as much as digits as its factorization.

10020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102.

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 10020001 is about 3165.4385162249. The cubic root of 10020001 is about 215.5870095080.

Adding to 10020001 its reverse (10002001), we get a palindrome (20022002).

Multiplying 10020001 by its reverse (10002001), we get a palindrome (100220060022001).

It can be divided in two parts, 1002000 and 1, that added together give a palindrome (1002001).

The spelling of 10020001 in words is "ten million, twenty thousand, one".