1212303412 has 24 divisors (see below), whose sum is σ = 2216092032. Its totient is φ = 579189600.

The previous prime is 1212303401. The next prime is 1212303419. The reversal of 1212303412 is 2143032121.

It is a happy number.

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 1212303412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212303419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88462 + ... + 101242.

It is an arithmetic number, because the mean of its divisors is an integer number (92337168).

Almost surely, 2^1212303412 is an apocalyptic number.

It is an amenable number.

1212303412 is a deficient number, since it is larger than the sum of its proper divisors (1003788620).

1212303412 is a wasteful number, since it uses less digits than its factorization.

1212303412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839 (or 13837 counting only the distinct ones).

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

The square root of 1212303412 is about 34818.1477393614. The cubic root of 1212303412 is about 1066.2779847311.

Adding to 1212303412 its reverse (2143032121), we get a palindrome (3355335533).

The spelling of 1212303412 in words is "one billion, two hundred twelve million, three hundred three thousand, four hundred twelve".