12440021104 has 80 divisors (see below), whose sum is σ = 28052426752. Its totient is φ = 5234056704.

The previous prime is 12440021101. The next prime is 12440021137. The reversal of 12440021104 is 40112004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440021101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819837 + ... + 1826659.

Almost surely, 2^12440021104 is an apocalyptic number.

12440021104 is a gapful number since it is divisible by the number (14) 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 12440021104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14026213376).

12440021104 is an abundant number, since it is smaller than the sum of its proper divisors (15612405648).

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

12440021104 is a wasteful number, since it uses less digits than its factorization.

12440021104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134 (or 7128 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12440021104 its reverse (40112004421), we get a palindrome (52552025525).

The spelling of 12440021104 in words is "twelve billion, four hundred forty million, twenty-one thousand, one hundred four".