222001402321 has 2 divisors, whose sum is σ = 222001402322. Its totient is φ = 222001402320.

The previous prime is 222001402319. The next prime is 222001402333. The reversal of 222001402321 is 123204100222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176010455296 + 45990947025 = 419536^2 + 214455^2 .

It is a cyclic number.

It is not a de Polignac number, because 222001402321 - 2¹ = 222001402319 is a prime.

Together with 222001402319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (222001406321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000701160 + 111000701161.

It is an arithmetic number, because the mean of its divisors is an integer number (111000701161).

Almost surely, 2^222001402321 is an apocalyptic number.

It is an amenable number.

222001402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001402321 is an equidigital number, since it uses as much as digits as its factorization.

222001402321 is an evil number, because the sum of its binary digits is even.

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

Adding to 222001402321 its reverse (123204100222), we get a palindrome (345205502543).

The spelling of 222001402321 in words is "two hundred twenty-two billion, one million, four hundred two thousand, three hundred twenty-one".