222231851077 has 2 divisors, whose sum is σ = 222231851078. Its totient is φ = 222231851076.

The previous prime is 222231851071. The next prime is 222231851081. The reversal of 222231851077 is 770158132222.

222231851077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217683832356 + 4548018721 = 466566^2 + 67439^2 .

It is a cyclic number.

It is not a de Polignac number, because 222231851077 - 2⁷ = 222231850949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222231851071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111115925538 + 111115925539.

It is an arithmetic number, because the mean of its divisors is an integer number (111115925539).

Almost surely, 2^222231851077 is an apocalyptic number.

It is an amenable number.

222231851077 is a deficient number, since it is larger than the sum of its proper divisors (1).

222231851077 is an equidigital number, since it uses as much as digits as its factorization.

222231851077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

Adding to 222231851077 its reverse (770158132222), we get a palindrome (992389983299).

The spelling of 222231851077 in words is "two hundred twenty-two billion, two hundred thirty-one million, eight hundred fifty-one thousand, seventy-seven".