222907681161 has 135 divisors (see below), whose sum is σ = 387831531549. Its totient is φ = 127475370000.

The previous prime is 222907681121. The next prime is 222907681181. The reversal of 222907681161 is 161186709222.

The square root of 222907681161 is 472131.

It is a perfect power (a square), and thus also a powerful number.

222907681161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222907681161 - 2⁹ = 222907680649 is a prime.

It is a super-3 number, since 3×222907681161³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (222907681121) 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 in 134 ways as a sum of consecutive naturals, for example, 888078286 + ... + 888078536.

Almost surely, 2^222907681161 is an apocalyptic number.

222907681161 is the 472131-st square number.

222907681161 is the 236066-th centered octagonal number.

It is an amenable number.

222907681161 is a deficient number, since it is larger than the sum of its proper divisors (164923850388).

222907681161 is an equidigital number, since it uses as much as digits as its factorization.

222907681161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 222907681161 in words is "two hundred twenty-two billion, nine hundred seven million, six hundred eighty-one thousand, one hundred sixty-one".