12011444004 has 48 divisors (see below), whose sum is σ = 32069340800. Its totient is φ = 3427681536.

The previous prime is 12011443949. The next prime is 12011444021. The reversal of 12011444004 is 40044411021.

It is a super-2 number, since 2×12011444004² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16609 + ... + 155880.

Almost surely, 2^12011444004 is an apocalyptic number.

12011444004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12011444004 is an abundant number, since it is smaller than the sum of its proper divisors (20057896796).

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

12011444004 is a wasteful number, since it uses less digits than its factorization.

12011444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173332 (or 173330 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12011444004 its reverse (40044411021), we get a palindrome (52055855025).

The spelling of 12011444004 in words is "twelve billion, eleven million, four hundred forty-four thousand, four".