94222231781 has 2 divisors, whose sum is σ = 94222231782. Its totient is φ = 94222231780.

The previous prime is 94222231739. The next prime is 94222231793. The reversal of 94222231781 is 18713222249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68963486881 + 25258744900 = 262609^2 + 158930^2 .

It is a cyclic number.

It is not a de Polignac number, because 94222231781 - 2¹⁰ = 94222230757 is a prime.

It is a super-2 number, since 2×94222231781² (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 (94222234781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47111115890 + 47111115891.

It is an arithmetic number, because the mean of its divisors is an integer number (47111115891).

Almost surely, 2^94222231781 is an apocalyptic number.

It is an amenable number.

94222231781 is a deficient number, since it is larger than the sum of its proper divisors (1).

94222231781 is an equidigital number, since it uses as much as digits as its factorization.

94222231781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The spelling of 94222231781 in words is "ninety-four billion, two hundred twenty-two million, two hundred thirty-one thousand, seven hundred eighty-one".