222132212321 has 2 divisors, whose sum is σ = 222132212322. Its totient is φ = 222132212320.

The previous prime is 222132212293. The next prime is 222132212353. The reversal of 222132212321 is 123212231222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222048288400 + 83923921 = 471220^2 + 9161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222132212321 is a prime.

It is not a weakly prime, because it can be changed into another prime (222132212381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111066106160 + 111066106161.

It is an arithmetic number, because the mean of its divisors is an integer number (111066106161).

Almost surely, 2^222132212321 is an apocalyptic number.

It is an amenable number.

222132212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222132212321 is an equidigital number, since it uses as much as digits as its factorization.

222132212321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

Adding to 222132212321 its reverse (123212231222), we get a palindrome (345344443543).

The spelling of 222132212321 in words is "two hundred twenty-two billion, one hundred thirty-two million, two hundred twelve thousand, three hundred twenty-one".