222143421214321 has 2 divisors, whose sum is σ = 222143421214322. Its totient is φ = 222143421214320.

The previous prime is 222143421214307. The next prime is 222143421214357. The reversal of 222143421214321 is 123412124341222.

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., 122271380254321 + 99872040960000 = 11057639^2 + 9993600^2 .

It is a cyclic number.

It is not a de Polignac number, because 222143421214321 - 2⁷ = 222143421214193 is a prime.

It is not a weakly prime, because it can be changed into another prime (222143421211321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111071710607160 + 111071710607161.

It is an arithmetic number, because the mean of its divisors is an integer number (111071710607161).

Almost surely, 2^{222143421214321} is an apocalyptic number.

It is an amenable number.

222143421214321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222143421214321 is an equidigital number, since it uses as much as digits as its factorization.

222143421214321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 34.

Adding to 222143421214321 its reverse (123412124341222), we get a palindrome (345555545555543).

The spelling of 222143421214321 in words is "two hundred twenty-two trillion, one hundred forty-three billion, four hundred twenty-one million, two hundred fourteen thousand, three hundred twenty-one".