201021022220321 has 4 divisors (see below), whose sum is σ = 201026795569200. Its totient is φ = 201015248871444.

The previous prime is 201021022220281. The next prime is 201021022220323. The reversal of 201021022220321 is 123022220120102.

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 201021022220321 - 2³⁰ = 201019948478497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021022220293 and 201021022220302.

It is not an unprimeable number, because it can be changed into a prime (201021022220323) 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, 2886622211 + ... + 2886691848.

It is an arithmetic number, because the mean of its divisors is an integer number (50256698892300).

Almost surely, 2^{201021022220321} is an apocalyptic number.

It is an amenable number.

201021022220321 is a deficient number, since it is larger than the sum of its proper divisors (5773348879).

201021022220321 is an equidigital number, since it uses as much as digits as its factorization.

201021022220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773348878.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201021022220321 its reverse (123022220120102), we get a palindrome (324043242340423).

The spelling of 201021022220321 in words is "two hundred one trillion, twenty-one billion, twenty-two million, two hundred twenty thousand, three hundred twenty-one".