12245005140 has 144 divisors (see below), whose sum is σ = 37041883200. Its totient is φ = 3020914688.

The previous prime is 12245005117. The next prime is 12245005147. The reversal of 12245005140 is 4150054221.

It is a self number, because there is not a number n which added to its sum of digits gives 12245005140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245005147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1017076 + ... + 1029044.

It is an arithmetic number, because the mean of its divisors is an integer number (257235300).

Almost surely, 2^12245005140 is an apocalyptic number.

12245005140 is a gapful number since it is divisible by the number (10) 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 12245005140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18520941600).

12245005140 is an abundant number, since it is smaller than the sum of its proper divisors (24796878060).

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

12245005140 is a wasteful number, since it uses less digits than its factorization.

12245005140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12074 (or 12055 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 12245005140 its reverse (4150054221), we get a palindrome (16395059361).

The spelling of 12245005140 in words is "twelve billion, two hundred forty-five million, five thousand, one hundred forty".