222912773 has 2 divisors, whose sum is σ = 222912774. Its totient is φ = 222912772.

The previous prime is 222912761. The next prime is 222912787. The reversal of 222912773 is 377219222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142038724 + 80874049 = 11918^2 + 8993^2 .

It is a cyclic number.

It is not a de Polignac number, because 222912773 - 2¹⁰ = 222911749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222912713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111456386 + 111456387.

It is an arithmetic number, because the mean of its divisors is an integer number (111456387).

Almost surely, 2^222912773 is an apocalyptic number.

It is an amenable number.

222912773 is a deficient number, since it is larger than the sum of its proper divisors (1).

222912773 is an equidigital number, since it uses as much as digits as its factorization.

222912773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 222912773 is about 14930.2636614361. The cubic root of 222912773 is about 606.3336225317. Note that the first 3 decimals are identical.

The spelling of 222912773 in words is "two hundred twenty-two million, nine hundred twelve thousand, seven hundred seventy-three".