12011220112 has 10 divisors (see below), whose sum is σ = 23271738998. Its totient is φ = 6005610048.

The previous prime is 12011220107. The next prime is 12011220157. The reversal of 12011220112 is 21102211021.

12011220112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6418573456 + 5592646656 = 80116^2 + 74784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011220092 and 12011220101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 375350613 + ... + 375350644.

Almost surely, 2^12011220112 is an apocalyptic number.

It is an amenable number.

12011220112 is a deficient number, since it is larger than the sum of its proper divisors (11260518886).

12011220112 is an equidigital number, since it uses as much as digits as its factorization.

12011220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750701265 (or 750701259 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011220112 its reverse (21102211021), we get a palindrome (33113431133).

Subtracting 12011220112 from its reverse (21102211021), we obtain a palindrome (9090990909).

The spelling of 12011220112 in words is "twelve billion, eleven million, two hundred twenty thousand, one hundred twelve".