12122512 has 20 divisors (see below), whose sum is σ = 23754060. Its totient is φ = 5992448.

The previous prime is 12122507. The next prime is 12122533. The reversal of 12122512 is 21522121.

It is a happy number.

12122512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7862416 + 4260096 = 2804^2 + 2064^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2833 + ... + 5680.

It is an arithmetic number, because the mean of its divisors is an integer number (1187703).

Almost surely, 2^12122512 is an apocalyptic number.

It is an amenable number.

12122512 is a deficient number, since it is larger than the sum of its proper divisors (11631548).

12122512 is an equidigital number, since it uses as much as digits as its factorization.

12122512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610 (or 8604 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 12122512 is about 3481.7397949876. The cubic root of 12122512 is about 229.7193299742.

Adding to 12122512 its reverse (21522121), we get a palindrome (33644633).

The spelling of 12122512 in words is "twelve million, one hundred twenty-two thousand, five hundred twelve".