1224212313 has 16 divisors (see below), whose sum is σ = 1819264320. Its totient is φ = 727704576.

The previous prime is 1224212291. The next prime is 1224212369. The reversal of 1224212313 is 3132124221.

It is not a de Polignac number, because 1224212313 - 2²⁹ = 687341401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1224212313.

It is not an unprimeable number, because it can be changed into a prime (1224212113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630720 + ... + 632657.

It is an arithmetic number, because the mean of its divisors is an integer number (113704020).

Almost surely, 2^1224212313 is an apocalyptic number.

It is an amenable number.

1224212313 is a deficient number, since it is larger than the sum of its proper divisors (595052007).

1224212313 is a wasteful number, since it uses less digits than its factorization.

1224212313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263416.

The product of its digits is 576, while the sum is 21.

The square root of 1224212313 is about 34988.7455190951. The cubic root of 1224212313 is about 1069.7580939149.

Adding to 1224212313 its reverse (3132124221), we get a palindrome (4356336534).

The spelling of 1224212313 in words is "one billion, two hundred twenty-four million, two hundred twelve thousand, three hundred thirteen".