222868777 has 2 divisors, whose sum is σ = 222868778. Its totient is φ = 222868776.

The previous prime is 222868771. The next prime is 222868843. The reversal of 222868777 is 777868222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174134416 + 48734361 = 13196^2 + 6981^2 .

It is a cyclic number.

It is not a de Polignac number, because 222868777 - 2³ = 222868769 is a prime.

It is a super-2 number, since 2×222868777² = 99340983522951458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222868777.

It is not a weakly prime, because it can be changed into another prime (222868771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111434388 + 111434389.

It is an arithmetic number, because the mean of its divisors is an integer number (111434389).

Almost surely, 2^222868777 is an apocalyptic number.

It is an amenable number.

222868777 is a deficient number, since it is larger than the sum of its proper divisors (1).

222868777 is an equidigital number, since it uses as much as digits as its factorization.

222868777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1053696, while the sum is 49.

The square root of 222868777 is about 14928.7902055056. The cubic root of 222868777 is about 606.2937294846.

The spelling of 222868777 in words is "two hundred twenty-two million, eight hundred sixty-eight thousand, seven hundred seventy-seven".