1224310421 has 4 divisors (see below), whose sum is σ = 1224552000. Its totient is φ = 1224068844.

The previous prime is 1224310397. The next prime is 1224310453. The reversal of 1224310421 is 1240134221.

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.

It is a cyclic number.

It is not a de Polignac number, because 1224310421 - 2²⁶ = 1157201557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224310393 and 1224310402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224370421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113021 + ... + 123378.

It is an arithmetic number, because the mean of its divisors is an integer number (306138000).

Almost surely, 2^1224310421 is an apocalyptic number.

It is an amenable number.

1224310421 is a deficient number, since it is larger than the sum of its proper divisors (241579).

1224310421 is an equidigital number, since it uses as much as digits as its factorization.

1224310421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241578.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1224310421 is about 34990.1474846849. The cubic root of 1224310421 is about 1069.7866698470.

Adding to 1224310421 its reverse (1240134221), we get a palindrome (2464444642).

The spelling of 1224310421 in words is "one billion, two hundred twenty-four million, three hundred ten thousand, four hundred twenty-one".