222241340161 has 2 divisors, whose sum is σ = 222241340162. Its totient is φ = 222241340160.

The previous prime is 222241340147. The next prime is 222241340173. The reversal of 222241340161 is 161043142222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125709957136 + 96531383025 = 354556^2 + 310695^2 .

It is a cyclic number.

It is not a de Polignac number, because 222241340161 - 2¹⁷ = 222241209089 is a prime.

It is not a weakly prime, because it can be changed into another prime (222241340261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111120670080 + 111120670081.

It is an arithmetic number, because the mean of its divisors is an integer number (111120670081).

Almost surely, 2^222241340161 is an apocalyptic number.

It is an amenable number.

222241340161 is a deficient number, since it is larger than the sum of its proper divisors (1).

222241340161 is an equidigital number, since it uses as much as digits as its factorization.

222241340161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 222241340161 its reverse (161043142222), we get a palindrome (383284482383).

The spelling of 222241340161 in words is "two hundred twenty-two billion, two hundred forty-one million, three hundred forty thousand, one hundred sixty-one".