1220571244 has 12 divisors (see below), whose sum is σ = 2193729664. Its totient is φ = 593791344.

The previous prime is 1220571241. The next prime is 1220571269. The reversal of 1220571244 is 4421750221.

It is not an unprimeable number, because it can be changed into a prime (1220571241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4123404 + ... + 4123699.

Almost surely, 2^1220571244 is an apocalyptic number.

It is an amenable number.

1220571244 is a deficient number, since it is larger than the sum of its proper divisors (973158420).

1220571244 is a wasteful number, since it uses less digits than its factorization.

1220571244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8247144 (or 8247142 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 1220571244 is about 34936.6747702182. The cubic root of 1220571244 is about 1068.6964776772.

The spelling of 1220571244 in words is "one billion, two hundred twenty million, five hundred seventy-one thousand, two hundred forty-four".