222188371693 has 2 divisors, whose sum is σ = 222188371694. Its totient is φ = 222188371692.

The previous prime is 222188371667. The next prime is 222188371709. The reversal of 222188371693 is 396173881222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215441720649 + 6746651044 = 464157^2 + 82138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222188371693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222188371693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222188371663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111094185846 + 111094185847.

It is an arithmetic number, because the mean of its divisors is an integer number (111094185847).

Almost surely, 2^222188371693 is an apocalyptic number.

It is an amenable number.

222188371693 is a deficient number, since it is larger than the sum of its proper divisors (1).

222188371693 is an equidigital number, since it uses as much as digits as its factorization.

222188371693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The spelling of 222188371693 in words is "two hundred twenty-two billion, one hundred eighty-eight million, three hundred seventy-one thousand, six hundred ninety-three".