222001321321 has 4 divisors (see below), whose sum is σ = 239078346052. Its totient is φ = 204924296592.

The previous prime is 222001321309. The next prime is 222001321327. The reversal of 222001321321 is 123123100222.

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 144104511321 + 77896810000 = 379611^2 + 279100^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001321321 - 2¹¹ = 222001319273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222001321327) 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, 8538512346 + ... + 8538512371.

It is an arithmetic number, because the mean of its divisors is an integer number (59769586513).

Almost surely, 2^222001321321 is an apocalyptic number.

It is an amenable number.

222001321321 is a deficient number, since it is larger than the sum of its proper divisors (17077024731).

222001321321 is a wasteful number, since it uses less digits than its factorization.

222001321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17077024730.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222001321321 its reverse (123123100222), we get a palindrome (345124421543).

The spelling of 222001321321 in words is "two hundred twenty-two billion, one million, three hundred twenty-one thousand, three hundred twenty-one".