123223122 has 96 divisors (see below), whose sum is σ = 306161856. Its totient is φ = 35481600.

The previous prime is 123223103. The next prime is 123223181. The reversal of 123223122 is 221322321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 123223095 and 123223104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 348898 + ... + 349250.

It is an arithmetic number, because the mean of its divisors is an integer number (3189186).

Almost surely, 2^123223122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123223122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153080928).

123223122 is an abundant number, since it is smaller than the sum of its proper divisors (182938734).

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

123223122 is a wasteful number, since it uses less digits than its factorization.

123223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 453 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 123223122 is about 11100.5910653442. The cubic root of 123223122 is about 497.6195138912.

Adding to 123223122 its reverse (221322321), we get a palindrome (344545443).

The spelling of 123223122 in words is "one hundred twenty-three million, two hundred twenty-three thousand, one hundred twenty-two".