1231223330120 has 128 divisors (see below), whose sum is σ = 3247936876800. Its totient is φ = 411239116800.

The previous prime is 1231223330093. The next prime is 1231223330131. The reversal of 1231223330120 is 210333221321.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7855076 + ... + 8010284.

It is an arithmetic number, because the mean of its divisors is an integer number (25374506850).

Almost surely, 2^{1231223330120} is an apocalyptic number.

1231223330120 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 1231223330120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623968438400).

1231223330120 is an abundant number, since it is smaller than the sum of its proper divisors (2016713546680).

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

1231223330120 is a wasteful number, since it uses less digits than its factorization.

1231223330120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155959 (or 155955 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1231223330120 its reverse (210333221321), we get a palindrome (1441556551441).

The spelling of 1231223330120 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, three hundred thirty thousand, one hundred twenty".