12102321024 has 128 divisors (see below), whose sum is σ = 36479116800. Its totient is φ = 3948221952.

The previous prime is 12102321013. The next prime is 12102321037. The reversal of 12102321024 is 42012320121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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 = 12102320988 and 12102321006.

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, 125179 + ... + 199685.

It is an arithmetic number, because the mean of its divisors is an integer number (284993100).

Almost surely, 2^12102321024 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 12102321024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18239558400).

12102321024 is an abundant number, since it is smaller than the sum of its proper divisors (24376795776).

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

12102321024 is an equidigital number, since it uses as much as digits as its factorization.

12102321024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74577 (or 74559 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12102321024 its reverse (42012320121), we get a palindrome (54114641145).

The spelling of 12102321024 in words is "twelve billion, one hundred two million, three hundred twenty-one thousand, twenty-four".