12119177521 has 16 divisors (see below), whose sum is σ = 13423273920. Its totient is φ = 10849662720.

The previous prime is 12119177519. The next prime is 12119177537. The reversal of 12119177521 is 12577191121.

It is a cyclic number.

It is not a de Polignac number, because 12119177521 - 2¹ = 12119177519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12119177561) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 264565 + ... + 306973.

It is an arithmetic number, because the mean of its divisors is an integer number (838954620).

Almost surely, 2^12119177521 is an apocalyptic number.

12119177521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12119177521 is a deficient number, since it is larger than the sum of its proper divisors (1304096399).

12119177521 is a wasteful number, since it uses less digits than its factorization.

12119177521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42816.

The product of its digits is 8820, while the sum is 37.

The spelling of 12119177521 in words is "twelve billion, one hundred nineteen million, one hundred seventy-seven thousand, five hundred twenty-one".