12103321032 has 144 divisors (see below), whose sum is σ = 36657307440. Its totient is φ = 3577824000.

The previous prime is 12103320973. The next prime is 12103321049. The reversal of 12103321032 is 23012330121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12103320996 and 12103321014.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1326807 + ... + 1335897.

It is an arithmetic number, because the mean of its divisors is an integer number (254564635).

Almost surely, 2^12103321032 is an apocalyptic number.

12103321032 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 12103321032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18328653720).

12103321032 is an abundant number, since it is smaller than the sum of its proper divisors (24553986408).

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

12103321032 is a wasteful number, since it uses less digits than its factorization.

12103321032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196 (or 9148 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12103321032 its reverse (23012330121), we get a palindrome (35115651153).

The spelling of 12103321032 in words is "twelve billion, one hundred three million, three hundred twenty-one thousand, thirty-two".