222606267781 has 2 divisors, whose sum is σ = 222606267782. Its totient is φ = 222606267780.

The previous prime is 222606267761. The next prime is 222606267857. The reversal of 222606267781 is 187762606222.

222606267781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122143260100 + 100463007681 = 349490^2 + 316959^2 .

It is a cyclic number.

It is not a de Polignac number, because 222606267781 - 2⁵ = 222606267749 is a prime.

It is a super-2 number, since 2×222606267781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222606267701) 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, 111303133890 + 111303133891.

It is an arithmetic number, because the mean of its divisors is an integer number (111303133891).

Almost surely, 2^222606267781 is an apocalyptic number.

It is an amenable number.

222606267781 is a deficient number, since it is larger than the sum of its proper divisors (1).

222606267781 is an equidigital number, since it uses as much as digits as its factorization.

222606267781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 222606267781 in words is "two hundred twenty-two billion, six hundred six million, two hundred sixty-seven thousand, seven hundred eighty-one".