222200032181 has 2 divisors, whose sum is σ = 222200032182. Its totient is φ = 222200032180.

The previous prime is 222200032121. The next prime is 222200032189. The reversal of 222200032181 is 181230002222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168092620081 + 54107412100 = 409991^2 + 232610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222200032181 is a prime.

It is a super-2 number, since 2×222200032181² (a number of 23 digits) contains 22 as substring.

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 (222200032189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100016090 + 111100016091.

It is an arithmetic number, because the mean of its divisors is an integer number (111100016091).

Almost surely, 2^222200032181 is an apocalyptic number.

It is an amenable number.

222200032181 is a deficient number, since it is larger than the sum of its proper divisors (1).

222200032181 is an equidigital number, since it uses as much as digits as its factorization.

222200032181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The spelling of 222200032181 in words is "two hundred twenty-two billion, two hundred million, thirty-two thousand, one hundred eighty-one".