222221100329 has 2 divisors, whose sum is σ = 222221100330. Its totient is φ = 222221100328.

The previous prime is 222221100323. The next prime is 222221100377. The reversal of 222221100329 is 923001122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152527740304 + 69693360025 = 390548^2 + 263995^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221100329 - 2⁴ = 222221100313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222221100298 and 222221100307.

It is not a weakly prime, because it can be changed into another prime (222221100323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110550164 + 111110550165.

It is an arithmetic number, because the mean of its divisors is an integer number (111110550165).

Almost surely, 2^222221100329 is an apocalyptic number.

It is an amenable number.

222221100329 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221100329 is an equidigital number, since it uses as much as digits as its factorization.

222221100329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 222221100329 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, three hundred twenty-nine".