1224421211 has 16 divisors (see below), whose sum is σ = 1346538816. Its totient is φ = 1106391936.

The previous prime is 1224421207. The next prime is 1224421241. The reversal of 1224421211 is 1121244221.

It is not a de Polignac number, because 1224421211 - 2² = 1224421207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224421201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344801 + ... + 348333.

It is an arithmetic number, because the mean of its divisors is an integer number (84158676).

Almost surely, 2^1224421211 is an apocalyptic number.

1224421211 is a deficient number, since it is larger than the sum of its proper divisors (122117605).

1224421211 is a wasteful number, since it uses less digits than its factorization.

1224421211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102.

The product of its digits is 256, while the sum is 20.

The square root of 1224421211 is about 34991.7306088167. The cubic root of 1224421211 is about 1069.8189378318.

Adding to 1224421211 its reverse (1121244221), we get a palindrome (2345665432).

The spelling of 1224421211 in words is "one billion, two hundred twenty-four million, four hundred twenty-one thousand, two hundred eleven".