12111310432 has 96 divisors (see below), whose sum is σ = 26671680000. Its totient is φ = 5377663488.

The previous prime is 12111310411. The next prime is 12111310447. The reversal of 12111310432 is 23401311121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148319 + ... + 1158817.

It is an arithmetic number, because the mean of its divisors is an integer number (277830000).

Almost surely, 2^12111310432 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 12111310432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13335840000).

12111310432 is an abundant number, since it is smaller than the sum of its proper divisors (14560369568).

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

12111310432 is a wasteful number, since it uses less digits than its factorization.

12111310432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10628 (or 10620 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12111310432 its reverse (23401311121), we get a palindrome (35512621553).

The spelling of 12111310432 in words is "twelve billion, one hundred eleven million, three hundred ten thousand, four hundred thirty-two".