222405941 has 2 divisors, whose sum is σ = 222405942. Its totient is φ = 222405940.

The previous prime is 222405919. The next prime is 222405947. The reversal of 222405941 is 149504222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220403716 + 2002225 = 14846^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222405941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_12247715 and since 222405941 and 12247715 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222405947) 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, 111202970 + 111202971.

It is an arithmetic number, because the mean of its divisors is an integer number (111202971).

Almost surely, 2^222405941 is an apocalyptic number.

It is an amenable number.

222405941 is a deficient number, since it is larger than the sum of its proper divisors (1).

222405941 is an equidigital number, since it uses as much as digits as its factorization.

222405941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 222405941 is about 14913.2806920543. The cubic root of 222405941 is about 605.8737378863.

The spelling of 222405941 in words is "two hundred twenty-two million, four hundred five thousand, nine hundred forty-one".