322142100021221 has 4 divisors (see below), whose sum is σ = 322152431411244. Its totient is φ = 322131768631200.

The previous prime is 322142100021211. The next prime is 322142100021223. The reversal of 322142100021221 is 122120001241223.

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 30774645300100 + 291367454721121 = 5547490^2 + 17069489^2 .

It is a cyclic number.

It is not a de Polignac number, because 322142100021221 - 2¹⁰ = 322142100020197 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 (322142100021223) 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, 5165648240 + ... + 5165710601.

It is an arithmetic number, because the mean of its divisors is an integer number (80538107852811).

Almost surely, 2^{322142100021221} is an apocalyptic number.

It is an amenable number.

322142100021221 is a deficient number, since it is larger than the sum of its proper divisors (10331390023).

322142100021221 is a wasteful number, since it uses less digits than its factorization.

322142100021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331390022.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 322142100021221 its reverse (122120001241223), we get a palindrome (444262101262444).

The spelling of 322142100021221 in words is "three hundred twenty-two trillion, one hundred forty-two billion, one hundred million, twenty-one thousand, two hundred twenty-one".