201221021200323 has 8 divisors (see below), whose sum is σ = 270071480993536. Its totient is φ = 133258954437000.

The previous prime is 201221021200321. The next prime is 201221021200337. The reversal of 201221021200323 is 323002120122102.

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

It is not a de Polignac number, because 201221021200323 - 2¹ = 201221021200321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201221021200323.

It is not an unprimeable number, because it can be changed into a prime (201221021200321) 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, 222098256943 + ... + 222098257848.

It is an arithmetic number, because the mean of its divisors is an integer number (33758935124192).

Almost surely, 2^{201221021200323} is an apocalyptic number.

201221021200323 is a deficient number, since it is larger than the sum of its proper divisors (68850459793213).

201221021200323 is a wasteful number, since it uses less digits than its factorization.

201221021200323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444196514945.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201221021200323 its reverse (323002120122102), we get a palindrome (524223141322425).

The spelling of 201221021200323 in words is "two hundred one trillion, two hundred twenty-one billion, twenty-one million, two hundred thousand, three hundred twenty-three".