123132122120 has 32 divisors (see below), whose sum is σ = 316625457600. Its totient is φ = 42216727488.

The previous prime is 123132122093. The next prime is 123132122123. The reversal of 123132122120 is 21221231321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123132122092 and 123132122101.

It is not an unprimeable number, because it can be changed into a prime (123132122123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219878510 + ... + 219879069.

It is an arithmetic number, because the mean of its divisors is an integer number (9894545550).

Almost surely, 2^123132122120 is an apocalyptic number.

123132122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123132122120 is an abundant number, since it is smaller than the sum of its proper divisors (193493335480).

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

123132122120 is a wasteful number, since it uses less digits than its factorization.

123132122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439757597 (or 439757593 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123132122120 its reverse (21221231321), we get a palindrome (144353353441).

The spelling of 123132122120 in words is "one hundred twenty-three billion, one hundred thirty-two million, one hundred twenty-two thousand, one hundred twenty".