322322001221221 has 4 divisors (see below), whose sum is σ = 333436552987500. Its totient is φ = 311207449454944.

The previous prime is 322322001221173. The next prime is 322322001221237. The reversal of 322322001221221 is 122122100223223.

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 152087719788225 + 170234281432996 = 12332385^2 + 13047386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322322001221221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322322001221291) 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, 5557275883096 + ... + 5557275883153.

It is an arithmetic number, because the mean of its divisors is an integer number (83359138246875).

Almost surely, 2^{322322001221221} is an apocalyptic number.

It is an amenable number.

322322001221221 is a deficient number, since it is larger than the sum of its proper divisors (11114551766279).

322322001221221 is a wasteful number, since it uses less digits than its factorization.

322322001221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11114551766278.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 322322001221221 its reverse (122122100223223), we get a palindrome (444444101444444).

The spelling of 322322001221221 in words is "three hundred twenty-two trillion, three hundred twenty-two billion, one million, two hundred twenty-one thousand, two hundred twenty-one".