11512321412 has 12 divisors (see below), whose sum is σ = 20430317376. Its totient is φ = 5675087880.

The previous prime is 11512321411. The next prime is 11512321427. The reversal of 11512321412 is 21412321511.

It is not an unprimeable number, because it can be changed into a prime (11512321411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20267888 + ... + 20268455.

It is an arithmetic number, because the mean of its divisors is an integer number (1702526448).

Almost surely, 2^11512321412 is an apocalyptic number.

It is an amenable number.

11512321412 is a deficient number, since it is larger than the sum of its proper divisors (8917995964).

11512321412 is a wasteful number, since it uses less digits than its factorization.

11512321412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40536418 (or 40536416 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

Adding to 11512321412 its reverse (21412321511), we get a palindrome (32924642923).

Subtracting 11512321412 from its reverse (21412321511), we obtain a palindrome (9900000099).

The spelling of 11512321412 in words is "eleven billion, five hundred twelve million, three hundred twenty-one thousand, four hundred twelve".