20321103001 has 4 divisors (see below), whose sum is σ = 20342978100. Its totient is φ = 20299227904.

The previous prime is 20321102993. The next prime is 20321103007. The reversal of 20321103001 is 10030112302.

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 9021200400 + 11299902601 = 94980^2 + 106301^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321103001 - 2³ = 20321102993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321103007) 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, 10936156 + ... + 10938013.

It is an arithmetic number, because the mean of its divisors is an integer number (5085744525).

Almost surely, 2^20321103001 is an apocalyptic number.

It is an amenable number.

20321103001 is a deficient number, since it is larger than the sum of its proper divisors (21875099).

20321103001 is an equidigital number, since it uses as much as digits as its factorization.

20321103001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21875098.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20321103001 its reverse (10030112302), we get a palindrome (30351215303).

The spelling of 20321103001 in words is "twenty billion, three hundred twenty-one million, one hundred three thousand, one".