12012111530 has 16 divisors (see below), whose sum is σ = 22149162504. Its totient is φ = 4687653120.

The previous prime is 12012111523. The next prime is 12012111569. The reversal of 12012111530 is 3511121021.

It can be written as a sum of positive squares in 4 ways, for example, as 9752155009 + 2259956521 = 98753^2 + 47539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12012111499 and 12012111508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14648507 + ... + 14649326.

Almost surely, 2^12012111530 is an apocalyptic number.

12012111530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012111530 is a deficient number, since it is larger than the sum of its proper divisors (10137050974).

12012111530 is a wasteful number, since it uses less digits than its factorization.

12012111530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29297881.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 12012111530 its reverse (3511121021), we get a palindrome (15523232551).

The spelling of 12012111530 in words is "twelve billion, twelve million, one hundred eleven thousand, five hundred thirty".