1212323212 has 12 divisors (see below), whose sum is σ = 2140341336. Its totient is φ = 600797120.

The previous prime is 1212323207. The next prime is 1212323239. The reversal of 1212323212 is 2123232121.

1212323212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1212323212.

It is an unprimeable number.

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, 1340614 + ... + 1341517.

It is an arithmetic number, because the mean of its divisors is an integer number (178361778).

Almost surely, 2^1212323212 is an apocalyptic number.

It is an amenable number.

1212323212 is a deficient number, since it is larger than the sum of its proper divisors (928018124).

1212323212 is a wasteful number, since it uses less digits than its factorization.

1212323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682248 (or 2682246 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1212323212 is about 34818.4320726824. The cubic root of 1212323212 is about 1066.2837897106.

Adding to 1212323212 its reverse (2123232121), we get a palindrome (3335555333).

The spelling of 1212323212 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, two hundred twelve".