20321203310201 has 4 divisors (see below), whose sum is σ = 20365093598592. Its totient is φ = 20277313021812.

The previous prime is 20321203310179. The next prime is 20321203310263. The reversal of 20321203310201 is 10201330212302.

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 a de Polignac number, because none of the positive numbers 2^k-20321203310201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321203370201) 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, 21945143501 + ... + 21945144426.

It is an arithmetic number, because the mean of its divisors is an integer number (5091273399648).

Almost surely, 2^{20321203310201} is an apocalyptic number.

It is an amenable number.

20321203310201 is a deficient number, since it is larger than the sum of its proper divisors (43890288391).

20321203310201 is an equidigital number, since it uses as much as digits as its factorization.

20321203310201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43890288390.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20321203310201 its reverse (10201330212302), we get a palindrome (30522533522503).

The spelling of 20321203310201 in words is "twenty trillion, three hundred twenty-one billion, two hundred three million, three hundred ten thousand, two hundred one".