20330002001 has 4 divisors (see below), whose sum is σ = 20336324772. Its totient is φ = 20323679232.

The previous prime is 20330001977. The next prime is 20330002003. The reversal of 20330002001 is 10020003302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19543760401 + 786241600 = 139799^2 + 28040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20330002001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330002003) 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, 3156560 + ... + 3162993.

It is an arithmetic number, because the mean of its divisors is an integer number (5084081193).

Almost surely, 2^20330002001 is an apocalyptic number.

It is an amenable number.

20330002001 is a deficient number, since it is larger than the sum of its proper divisors (6322771).

20330002001 is an equidigital number, since it uses as much as digits as its factorization.

20330002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322770.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20330002001 its reverse (10020003302), we get a palindrome (30350005303).

The spelling of 20330002001 in words is "twenty billion, three hundred thirty million, two thousand, one".