1224225213 has 8 divisors (see below), whose sum is σ = 1641420000. Its totient is φ = 811590288.

The previous prime is 1224225173. The next prime is 1224225281. The reversal of 1224225213 is 3125224221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224225213 - 2¹⁴ = 1224208829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224220213) 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, 1139338 + ... + 1140411.

It is an arithmetic number, because the mean of its divisors is an integer number (205177500).

Almost surely, 2^1224225213 is an apocalyptic number.

It is an amenable number.

1224225213 is a deficient number, since it is larger than the sum of its proper divisors (417194787).

1224225213 is a wasteful number, since it uses less digits than its factorization.

1224225213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279931.

The product of its digits is 1920, while the sum is 24.

The square root of 1224225213 is about 34988.9298636011. The cubic root of 1224225213 is about 1069.7618513871.

Adding to 1224225213 its reverse (3125224221), we get a palindrome (4349449434).

The spelling of 1224225213 in words is "one billion, two hundred twenty-four million, two hundred twenty-five thousand, two hundred thirteen".