12021281184 has 96 divisors (see below), whose sum is σ = 35535144960. Its totient is φ = 3525292800.

The previous prime is 12021281159. The next prime is 12021281189. The reversal of 12021281184 is 48118212021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12021281184² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021281189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150874 + ... + 216345.

It is an arithmetic number, because the mean of its divisors is an integer number (370157760).

Almost surely, 2^12021281184 is an apocalyptic number.

It is an amenable number.

12021281184 is an abundant number, since it is smaller than the sum of its proper divisors (23513863776).

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

12021281184 is a wasteful number, since it uses less digits than its factorization.

12021281184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367274 (or 367266 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The spelling of 12021281184 in words is "twelve billion, twenty-one million, two hundred eighty-one thousand, one hundred eighty-four".