12011219988 has 48 divisors (see below), whose sum is σ = 29285867520. Its totient is φ = 3824274784.

The previous prime is 12011219981. The next prime is 12011219989. The reversal of 12011219988 is 88991211021.

It is a happy number.

12011219988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011219981) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 168181 + ... + 228707.

It is an arithmetic number, because the mean of its divisors is an integer number (610122240).

Almost surely, 2^12011219988 is an apocalyptic number.

It is an amenable number.

12011219988 is an abundant number, since it is smaller than the sum of its proper divisors (17274647532).

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

12011219988 is a wasteful number, since it uses less digits than its factorization.

12011219988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61276 (or 61274 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 42.

The spelling of 12011219988 in words is "twelve billion, eleven million, two hundred nineteen thousand, nine hundred eighty-eight".