12011335992 has 128 divisors (see below), whose sum is σ = 35370561600. Its totient is φ = 3763666944.

The previous prime is 12011335969. The next prime is 12011335997. The reversal of 12011335992 is 29953311021.

12011335992 is a `hidden beast` number, since 1 + 20 + 11 + 33 + 599 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011335997) 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 31 ways as a sum of consecutive naturals, for example, 4232398 + ... + 4235234.

Almost surely, 2^12011335992 is an apocalyptic number.

12011335992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011335992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17685280800).

12011335992 is an abundant number, since it is smaller than the sum of its proper divisors (23359225608).

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

12011335992 is a wasteful number, since it uses less digits than its factorization.

12011335992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022 (or 4012 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The spelling of 12011335992 in words is "twelve billion, eleven million, three hundred thirty-five thousand, nine hundred ninety-two".