123221122 has 16 divisors (see below), whose sum is σ = 189100800. Its totient is φ = 60192288.

The previous prime is 123221071. The next prime is 123221129. The reversal of 123221122 is 221122321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123221096 and 123221105.

It is not an unprimeable number, because it can be changed into a prime (123221129) 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, 87379 + ... + 88777.

It is an arithmetic number, because the mean of its divisors is an integer number (11818800).

Almost surely, 2^123221122 is an apocalyptic number.

123221122 is a deficient number, since it is larger than the sum of its proper divisors (65879678).

123221122 is a wasteful number, since it uses less digits than its factorization.

123221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its digits is 96, while the sum is 16.

The square root of 123221122 is about 11100.5009796856. The cubic root of 123221122 is about 497.6168216356.

Adding to 123221122 its reverse (221122321), we get a palindrome (344343443).

The spelling of 123221122 in words is "one hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-two".