12111340211520 has 448 divisors, whose sum is σ = 43731337715712. Its totient is φ = 2813230080000.

The previous prime is 12111340211479. The next prime is 12111340211521. The reversal of 12111340211520 is 2511204311121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111340211521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32880207 + ... + 33246513.

Almost surely, 2^{12111340211520} is an apocalyptic number.

12111340211520 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 12111340211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21865668857856).

12111340211520 is an abundant number, since it is smaller than the sum of its proper divisors (31619997504192).

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

12111340211520 is a wasteful number, since it uses less digits than its factorization.

12111340211520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366470 (or 366460 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 12111340211520 its reverse (2511204311121), we get a palindrome (14622544522641).

The spelling of 12111340211520 in words is "twelve trillion, one hundred eleven billion, three hundred forty million, two hundred eleven thousand, five hundred twenty".