12011403400 has 24 divisors (see below), whose sum is σ = 27926513370. Its totient is φ = 4804561280.

The previous prime is 12011403379. The next prime is 12011403461. The reversal of 12011403400 is 430411021.

It can be written as a sum of positive squares in 3 ways, for example, as 6932560644 + 5078842756 = 83262^2 + 71266^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 30028309 + ... + 30028708.

Almost surely, 2^12011403400 is an apocalyptic number.

12011403400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011403400 is an abundant number, since it is smaller than the sum of its proper divisors (15915109970).

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

12011403400 is a wasteful number, since it uses less digits than its factorization.

12011403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60057033 (or 60057024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12011403400 its reverse (430411021), we get a palindrome (12441814421).

The spelling of 12011403400 in words is "twelve billion, eleven million, four hundred three thousand, four hundred".