12106543121232 has 160 divisors (see below), whose sum is σ = 37681157013504. Its totient is φ = 3276209203200.

The previous prime is 12106543121209. The next prime is 12106543121237. The reversal of 12106543121232 is 23212134560121.

It is a junction number, because it is equal to n+sod(n) for n = 12106543121193 and 12106543121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12106543121237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11875369 + ... + 12854472.

Almost surely, 2^{12106543121232} is an apocalyptic number.

12106543121232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12106543121232 is an abundant number, since it is smaller than the sum of its proper divisors (25574613892272).

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

12106543121232 is a wasteful number, since it uses less digits than its factorization.

12106543121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24729937 (or 24729931 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 12106543121232 its reverse (23212134560121), we get a palindrome (35318677681353).

The spelling of 12106543121232 in words is "twelve trillion, one hundred six billion, five hundred forty-three million, one hundred twenty-one thousand, two hundred thirty-two".