1224240219 has 6 divisors (see below), whose sum is σ = 1768346996. Its totient is φ = 816160140.

The previous prime is 1224240203. The next prime is 1224240221. The reversal of 1224240219 is 9120424221.

1224240219 is a `hidden beast` number, since 1 + 2 + 242 + 402 + 19 = 666.

1224240219 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1224240219 - 2⁴ = 1224240203 is a prime.

It is a super-2 number, since 2×1224240219² = 2997528227634335922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224240192 and 1224240201.

It is not an unprimeable number, because it can be changed into a prime (1224240299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68013337 + ... + 68013354.

Almost surely, 2^1224240219 is an apocalyptic number.

1224240219 is a deficient number, since it is larger than the sum of its proper divisors (544106777).

1224240219 is a wasteful number, since it uses less digits than its factorization.

1224240219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136026697 (or 136026694 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1224240219 is about 34989.1443021975. The cubic root of 1224240219 is about 1069.7662222551.

The spelling of 1224240219 in words is "one billion, two hundred twenty-four million, two hundred forty thousand, two hundred nineteen".