12111404313440 has 48 divisors (see below), whose sum is σ = 28975385033280. Its totient is φ = 4783238154240.

The previous prime is 12111404313427. The next prime is 12111404313443. The reversal of 12111404313440 is 4431340411121.

It is a happy number.

It is a super-2 number, since 2×12111404313440² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111404313443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479077721 + ... + 479103000.

It is an arithmetic number, because the mean of its divisors is an integer number (603653854860).

Almost surely, 2^{12111404313440} is an apocalyptic number.

12111404313440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111404313440 is an abundant number, since it is smaller than the sum of its proper divisors (16863980719840).

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

12111404313440 is an equidigital number, since it uses as much as digits as its factorization.

12111404313440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958180815 (or 958180807 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 12111404313440 its reverse (4431340411121), we get a palindrome (16542744724561).

The spelling of 12111404313440 in words is "twelve trillion, one hundred eleven billion, four hundred four million, three hundred thirteen thousand, four hundred forty".