123222160 has 40 divisors (see below), whose sum is σ = 296376120. Its totient is φ = 47588352.

The previous prime is 123222157. The next prime is 123222161. The reversal of 123222160 is 61222321.

It can be written as a sum of positive squares in 4 ways, for example, as 13307904 + 109914256 = 3648^2 + 10484^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123222161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24237 + ... + 28876.

It is an arithmetic number, because the mean of its divisors is an integer number (7409403).

Almost surely, 2^123222160 is an apocalyptic number.

123222160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123222160 is an abundant number, since it is smaller than the sum of its proper divisors (173153960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123222160 is a wasteful number, since it uses less digits than its factorization.

123222160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53155 (or 53149 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 123222160 is about 11100.5477342337. The cubic root of 123222160 is about 497.6182189199.

Adding to 123222160 its reverse (61222321), we get a palindrome (184444481).

The spelling of 123222160 in words is "one hundred twenty-three million, two hundred twenty-two thousand, one hundred sixty".