121323231232 has 96 divisors (see below), whose sum is σ = 281382716160. Its totient is φ = 51219210240.

The previous prime is 121323231229. The next prime is 121323231317. The reversal of 121323231232 is 232132323121.

It is a junction number, because it is equal to n+sod(n) for n = 121323231197 and 121323231206.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 897357 + ... + 1023667.

It is an arithmetic number, because the mean of its divisors is an integer number (2931069960).

Almost surely, 2^121323231232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121323231232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140691358080).

121323231232 is an abundant number, since it is smaller than the sum of its proper divisors (160059484928).

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

121323231232 is an equidigital number, since it uses as much as digits as its factorization.

121323231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126407 (or 126387 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 121323231232 its reverse (232132323121), we get a palindrome (353455554353).

The spelling of 121323231232 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred thirty-one thousand, two hundred thirty-two".