22222142321 has 2 divisors, whose sum is σ = 22222142322. Its totient is φ = 22222142320.

The previous prime is 22222142287. The next prime is 22222142353. The reversal of 22222142321 is 12324122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16527930721 + 5694211600 = 128561^2 + 75460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222142321 is a prime.

It is not a weakly prime, because it can be changed into another prime (22222142221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111071160 + 11111071161.

It is an arithmetic number, because the mean of its divisors is an integer number (11111071161).

Almost surely, 2^22222142321 is an apocalyptic number.

It is an amenable number.

22222142321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222142321 is an equidigital number, since it uses as much as digits as its factorization.

22222142321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 23.

Adding to 22222142321 its reverse (12324122222), we get a palindrome (34546264543).

The spelling of 22222142321 in words is "twenty-two billion, two hundred twenty-two million, one hundred forty-two thousand, three hundred twenty-one".