12101231232 has 96 divisors (see below), whose sum is σ = 34914746880. Its totient is φ = 4023065088.

The previous prime is 12101231213. The next prime is 12101231237. The reversal of 12101231232 is 23213210121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12101231237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427503 + ... + 454929.

It is an arithmetic number, because the mean of its divisors is an integer number (363695280).

Almost surely, 2^12101231232 is an apocalyptic number.

12101231232 is a gapful number since it is divisible by the number (12) 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 12101231232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17457373440).

12101231232 is an abundant number, since it is smaller than the sum of its proper divisors (22813515648).

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

12101231232 is a wasteful number, since it uses less digits than its factorization.

12101231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27830 (or 27815 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12101231232 its reverse (23213210121), we get a palindrome (35314441353).

The spelling of 12101231232 in words is "twelve billion, one hundred one million, two hundred thirty-one thousand, two hundred thirty-two".