1224514121 has 4 divisors (see below), whose sum is σ = 1232313732. Its totient is φ = 1216714512.

The previous prime is 1224514117. The next prime is 1224514127. The reversal of 1224514121 is 1214154221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286929721 + 937584400 = 16939^2 + 30620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224514121 - 2² = 1224514117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224514127) 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, 3899570 + ... + 3899883.

It is an arithmetic number, because the mean of its divisors is an integer number (308078433).

Almost surely, 2^1224514121 is an apocalyptic number.

It is an amenable number.

1224514121 is a deficient number, since it is larger than the sum of its proper divisors (7799611).

1224514121 is an equidigital number, since it uses as much as digits as its factorization.

1224514121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799610.

The product of its digits is 640, while the sum is 23.

The square root of 1224514121 is about 34993.0581830168. The cubic root of 1224514121 is about 1069.8459967019.

Adding to 1224514121 its reverse (1214154221), we get a palindrome (2438668342).

The spelling of 1224514121 in words is "one billion, two hundred twenty-four million, five hundred fourteen thousand, one hundred twenty-one".