1211232412 has 24 divisors (see below), whose sum is σ = 2288613600. Its totient is φ = 557583936.

The previous prime is 1211232389. The next prime is 1211232427. The reversal of 1211232412 is 2142321121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211232412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9712 + ... + 50167.

It is an arithmetic number, because the mean of its divisors is an integer number (95358900).

Almost surely, 2^1211232412 is an apocalyptic number.

It is an amenable number.

1211232412 is a deficient number, since it is larger than the sum of its proper divisors (1077381188).

1211232412 is a wasteful number, since it uses less digits than its factorization.

1211232412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60285 (or 60283 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1211232412 is about 34802.7644304299. The cubic root of 1211232412 is about 1065.9638938945.

Adding to 1211232412 its reverse (2142321121), we get a palindrome (3353553533).

The spelling of 1211232412 in words is "one billion, two hundred eleven million, two hundred thirty-two thousand, four hundred twelve".