72222102289 has 2 divisors, whose sum is σ = 72222102290. Its totient is φ = 72222102288.

The previous prime is 72222102283. The next prime is 72222102299. The reversal of 72222102289 is 98220122227.

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., 42196143889 + 30025958400 = 205417^2 + 173280^2 .

It is a cyclic number.

It is not a de Polignac number, because 72222102289 - 2²⁵ = 72188547857 is a prime.

It is not a weakly prime, because it can be changed into another prime (72222102283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36111051144 + 36111051145.

It is an arithmetic number, because the mean of its divisors is an integer number (36111051145).

Almost surely, 2^72222102289 is an apocalyptic number.

It is an amenable number.

72222102289 is a deficient number, since it is larger than the sum of its proper divisors (1).

72222102289 is an equidigital number, since it uses as much as digits as its factorization.

72222102289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 72222102289 in words is "seventy-two billion, two hundred twenty-two million, one hundred two thousand, two hundred eighty-nine".