1224204461 has 4 divisors (see below), whose sum is σ = 1239700800. Its totient is φ = 1208708124.

The previous prime is 1224204439. The next prime is 1224204467. The reversal of 1224204461 is 1644024221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1644024221 = 7 ⋅234860603.

It is a cyclic number.

It is not a de Polignac number, because 1224204461 - 2²² = 1220010157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224204461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224204467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7748051 + ... + 7748208.

It is an arithmetic number, because the mean of its divisors is an integer number (309925200).

Almost surely, 2^1224204461 is an apocalyptic number.

It is an amenable number.

1224204461 is a deficient number, since it is larger than the sum of its proper divisors (15496339).

1224204461 is an equidigital number, since it uses as much as digits as its factorization.

1224204461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15496338.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1224204461 is about 34988.6333114056. The cubic root of 1224204461 is about 1069.7558067957.

Adding to 1224204461 its reverse (1644024221), we get a palindrome (2868228682).

The spelling of 1224204461 in words is "one billion, two hundred twenty-four million, two hundred four thousand, four hundred sixty-one".