12051821119 has 12 divisors (see below), whose sum is σ = 13078589832. Its totient is φ = 11100554400.

The previous prime is 12051821081. The next prime is 12051821123. The reversal of 12051821119 is 91112815021.

It is not a de Polignac number, because 12051821119 - 2⁹ = 12051820607 is a prime.

It is a super-2 number, since 2×12051821119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051825119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564 + ... + 155254.

It is an arithmetic number, because the mean of its divisors is an integer number (1089882486).

Almost surely, 2^12051821119 is an apocalyptic number.

12051821119 is a deficient number, since it is larger than the sum of its proper divisors (1026768713).

12051821119 is a wasteful number, since it uses less digits than its factorization.

12051821119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155178 (or 155165 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 31.

The spelling of 12051821119 in words is "twelve billion, fifty-one million, eight hundred twenty-one thousand, one hundred nineteen".