12011124440 has 64 divisors (see below), whose sum is σ = 31075349760. Its totient is φ = 4092819840.

The previous prime is 12011124439. The next prime is 12011124487. The reversal of 12011124440 is 4442111021.

It is a super-2 number, since 2×12011124440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 85946 + ... + 177225.

It is an arithmetic number, because the mean of its divisors is an integer number (485552340).

Almost surely, 2^12011124440 is an apocalyptic number.

12011124440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011124440 is an abundant number, since it is smaller than the sum of its proper divisors (19064225320).

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

12011124440 is a wasteful number, since it uses less digits than its factorization.

12011124440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263352 (or 263348 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12011124440 its reverse (4442111021), we get a palindrome (16453235461).

The spelling of 12011124440 in words is "twelve billion, eleven million, one hundred twenty-four thousand, four hundred forty".