12011512 has 16 divisors (see below), whose sum is σ = 22582800. Its totient is φ = 5989440.

The previous prime is 12011509. The next prime is 12011513. The reversal of 12011512 is 21511021.

It is a super-2 number, since 2×12011512² = 288552841052288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011492 and 12011501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437 + ... + 5107.

It is an arithmetic number, because the mean of its divisors is an integer number (1411425).

Almost surely, 2^12011512 is an apocalyptic number.

It is an amenable number.

12011512 is a deficient number, since it is larger than the sum of its proper divisors (10571288).

12011512 is a wasteful number, since it uses less digits than its factorization.

12011512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 12011512 is about 3465.7628308931. The cubic root of 12011512 is about 229.0160359473.

Adding to 12011512 its reverse (21511021), we get a palindrome (33522533).

The spelling of 12011512 in words is "twelve million, eleven thousand, five hundred twelve".