222001042321 has 2 divisors, whose sum is σ = 222001042322. Its totient is φ = 222001042320.

The previous prime is 222001042259. The next prime is 222001042349. The reversal of 222001042321 is 123240100222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176870713600 + 45130328721 = 420560^2 + 212439^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001042321 - 2¹⁵ = 222001009553 is a prime.

It is a super-2 number, since 2×222001042321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222001046321) 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, 111000521160 + 111000521161.

It is an arithmetic number, because the mean of its divisors is an integer number (111000521161).

Almost surely, 2^222001042321 is an apocalyptic number.

It is an amenable number.

222001042321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001042321 is an equidigital number, since it uses as much as digits as its factorization.

222001042321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222001042321 its reverse (123240100222), we get a palindrome (345241142543).

The spelling of 222001042321 in words is "two hundred twenty-two billion, one million, forty-two thousand, three hundred twenty-one".