12371212 has 12 divisors (see below), whose sum is σ = 24742480. Its totient is φ = 5301936.

The previous prime is 12371153. The next prime is 12371213. The reversal of 12371212 is 21217321.

12371212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12371212.

It is not an unprimeable number, because it can be changed into a prime (12371213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220887 + ... + 220942.

Almost surely, 2^12371212 is an apocalyptic number.

It is an amenable number.

12371212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12371212 is a wasteful number, since it uses less digits than its factorization.

12371212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441840 (or 441838 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 12371212 is about 3517.2733757841. The cubic root of 12371212 is about 231.2796473311.

Adding to 12371212 its reverse (21217321), we get a palindrome (33588533).

It can be divided in two parts, 12 and 371212, that multiplied together give a palindrome (4454544).

The spelling of 12371212 in words is "twelve million, three hundred seventy-one thousand, two hundred twelve".