12011131424 has 12 divisors (see below), whose sum is σ = 23646915054. Its totient is φ = 6005565696.

The previous prime is 12011131411. The next prime is 12011131453. The reversal of 12011131424 is 42413111021.

It can be written as a sum of positive squares in only one way, i.e., 11920272400 + 90859024 = 109180^2 + 9532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011131396 and 12011131405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187673897 + ... + 187673960.

Almost surely, 2^12011131424 is an apocalyptic number.

It is an amenable number.

12011131424 is a deficient number, since it is larger than the sum of its proper divisors (11635783630).

12011131424 is an equidigital number, since it uses as much as digits as its factorization.

12011131424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375347867 (or 375347859 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12011131424 its reverse (42413111021), we get a palindrome (54424242445).

The spelling of 12011131424 in words is "twelve billion, eleven million, one hundred thirty-one thousand, four hundred twenty-four".