12003522144 has 48 divisors (see below), whose sum is σ = 31529926512. Its totient is φ = 3998547968.

The previous prime is 12003522107. The next prime is 12003522161. The reversal of 12003522144 is 44122530021.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12003522144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108832 + ... + 189344.

It is an arithmetic number, because the mean of its divisors is an integer number (656873469).

Almost surely, 2^12003522144 is an apocalyptic number.

It is an amenable number.

12003522144 is an abundant number, since it is smaller than the sum of its proper divisors (19526404368).

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

12003522144 is a wasteful number, since it uses less digits than its factorization.

12003522144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82079 (or 82071 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The spelling of 12003522144 in words is "twelve billion, three million, five hundred twenty-two thousand, one hundred forty-four".