1224220244 has 24 divisors (see below), whose sum is σ = 2311502088. Its totient is φ = 563967360.

The previous prime is 1224220243. The next prime is 1224220247. The reversal of 1224220244 is 4420224221.

It can be written as a sum of positive squares in 4 ways, for example, as 67404100 + 1156816144 = 8210^2 + 34012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224220243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6374 + ... + 49890.

It is an arithmetic number, because the mean of its divisors is an integer number (96312587).

Almost surely, 2^1224220244 is an apocalyptic number.

It is an amenable number.

1224220244 is a deficient number, since it is larger than the sum of its proper divisors (1087281844).

1224220244 is a wasteful number, since it uses less digits than its factorization.

1224220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44075 (or 44073 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1224220244 is about 34988.8588553557. The cubic root of 1224220244 is about 1069.7604040352.

Adding to 1224220244 its reverse (4420224221), we get a palindrome (5644444465).

The spelling of 1224220244 in words is "one billion, two hundred twenty-four million, two hundred twenty thousand, two hundred forty-four".