1224212312 has 16 divisors (see below), whose sum is σ = 2297715360. Its totient is φ = 611488224.

The previous prime is 1224212291. The next prime is 1224212369. The reversal of 1224212312 is 2132124221.

It is a congruent number.

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, 68768 + ... + 84719.

It is an arithmetic number, because the mean of its divisors is an integer number (143607210).

Almost surely, 2^1224212312 is an apocalyptic number.

It is an amenable number.

1224212312 is a deficient number, since it is larger than the sum of its proper divisors (1073503048).

1224212312 is a wasteful number, since it uses less digits than its factorization.

1224212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154490 (or 154486 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 1224212312 is about 34988.7455048048. The cubic root of 1224212312 is about 1069.7580936236.

Adding to 1224212312 its reverse (2132124221), we get a palindrome (3356336533).

The spelling of 1224212312 in words is "one billion, two hundred twenty-four million, two hundred twelve thousand, three hundred twelve".