123122212312120 has 256 divisors, whose sum is σ = 335379037593600. Its totient is φ = 39737839403520.

The previous prime is 123122212312093. The next prime is 123122212312159. The reversal of 123122212312120 is 21213212221321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2632424335 + ... + 2632471105.

It is an arithmetic number, because the mean of its divisors is an integer number (1310074365600).

Almost surely, 2^{123122212312120} is an apocalyptic number.

123122212312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123122212312120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167689518796800).

123122212312120 is an abundant number, since it is smaller than the sum of its proper divisors (212256825281480).

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

123122212312120 is a wasteful number, since it uses less digits than its factorization.

123122212312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49938 (or 49934 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 123122212312120 its reverse (21213212221321), we get a palindrome (144335424533441).

The spelling of 123122212312120 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty".