20010020321 has 8 divisors (see below), whose sum is σ = 20265616800. Its totient is φ = 19755107680.

The previous prime is 20010020281. The next prime is 20010020347. The reversal of 20010020321 is 12302001002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20010020321 - 2³⁰ = 18936278497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010020351) 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, 111935 + ... + 229236.

It is an arithmetic number, because the mean of its divisors is an integer number (2533202100).

Almost surely, 2^20010020321 is an apocalyptic number.

It is an amenable number.

20010020321 is a deficient number, since it is larger than the sum of its proper divisors (255596479).

20010020321 is an equidigital number, since it uses as much as digits as its factorization.

20010020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341919.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20010020321 its reverse (12302001002), we get a palindrome (32312021323).

The spelling of 20010020321 in words is "twenty billion, ten million, twenty thousand, three hundred twenty-one".