222522161 has 8 divisors (see below), whose sum is σ = 226805760. Its totient is φ = 218278368.

The previous prime is 222522151. The next prime is 222522169. The reversal of 222522161 is 161225222.

222522161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222522161 is a prime.

It is a super-2 number, since 2×222522161² = 99032224272219842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222522169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (28350720).

Almost surely, 2^222522161 is an apocalyptic number.

It is an amenable number.

222522161 is a deficient number, since it is larger than the sum of its proper divisors (4283599).

222522161 is a wasteful number, since it uses less digits than its factorization.

222522161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19903.

The product of its digits is 960, while the sum is 23.

The square root of 222522161 is about 14917.1767100883. The cubic root of 222522161 is about 605.9792542285.

Adding to 222522161 its reverse (161225222), we get a palindrome (383747383).

The spelling of 222522161 in words is "two hundred twenty-two million, five hundred twenty-two thousand, one hundred sixty-one".