12121112032 has 12 divisors (see below), whose sum is σ = 23863439376. Its totient is φ = 6060556000.

The previous prime is 12121112027. The next prime is 12121112077. The reversal of 12121112032 is 23021112121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12121111997 and 12121112015.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 189392344 + ... + 189392407.

It is an arithmetic number, because the mean of its divisors is an integer number (1988619948).

Almost surely, 2^12121112032 is an apocalyptic number.

It is an amenable number.

12121112032 is a deficient number, since it is larger than the sum of its proper divisors (11742327344).

12121112032 is an equidigital number, since it uses as much as digits as its factorization.

12121112032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378784761 (or 378784753 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12121112032 its reverse (23021112121), we get a palindrome (35142224153).

The spelling of 12121112032 in words is "twelve billion, one hundred twenty-one million, one hundred twelve thousand, thirty-two".