1224434421 has 16 divisors (see below), whose sum is σ = 2073116800. Its totient is φ = 699676704.

The previous prime is 1224434399. The next prime is 1224434441. The reversal of 1224434421 is 1244344221.

1224434421 is a `hidden beast` number, since 1 + 224 + 434 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 1224434421 - 2⁷ = 1224434293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224434441) 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, 3239056 + ... + 3239433.

It is an arithmetic number, because the mean of its divisors is an integer number (129569800).

Almost surely, 2^1224434421 is an apocalyptic number.

It is an amenable number.

1224434421 is a deficient number, since it is larger than the sum of its proper divisors (848682379).

1224434421 is an equidigital number, since it uses as much as digits as its factorization.

1224434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478505 (or 6478499 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 1224434421 is about 34991.9193671910. The cubic root of 1224434421 is about 1069.8227851618.

Adding to 1224434421 its reverse (1244344221), we get a palindrome (2468778642).

It can be divided in two parts, 12244 and 34421, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 1224434421 in words is "one billion, two hundred twenty-four million, four hundred thirty-four thousand, four hundred twenty-one".