12120111146 has 48 divisors (see below), whose sum is σ = 21685060800. Its totient is φ = 5035829760.

The previous prime is 12120111109. The next prime is 12120111149. The reversal of 12120111146 is 64111102121.

It is not an unprimeable number, because it can be changed into a prime (12120111149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367130 + ... + 398778.

It is an arithmetic number, because the mean of its divisors is an integer number (451772100).

Almost surely, 2^12120111146 is an apocalyptic number.

12120111146 is a deficient number, since it is larger than the sum of its proper divisors (9564949654).

12120111146 is a wasteful number, since it uses less digits than its factorization.

12120111146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31791 (or 31778 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 12120111146 its reverse (64111102121), we get a palindrome (76231213267).

The spelling of 12120111146 in words is "twelve billion, one hundred twenty million, one hundred eleven thousand, one hundred forty-six".