123231200120 has 64 divisors (see below), whose sum is σ = 316915476480. Its totient is φ = 42245997696.

The previous prime is 123231200119. The next prime is 123231200123. The reversal of 123231200120 is 21002132321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231200123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3304217 + ... + 3341303.

It is an arithmetic number, because the mean of its divisors is an integer number (4951804320).

Almost surely, 2^123231200120 is an apocalyptic number.

123231200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231200120 is an abundant number, since it is smaller than the sum of its proper divisors (193684276360).

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

123231200120 is a wasteful number, since it uses less digits than its factorization.

123231200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48972 (or 48968 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 123231200120 its reverse (21002132321), we get a palindrome (144233332441).

The spelling of 123231200120 in words is "one hundred twenty-three billion, two hundred thirty-one million, two hundred thousand, one hundred twenty".