1220224743 has 24 divisors (see below), whose sum is σ = 1832205648. Its totient is φ = 811534464.

The previous prime is 1220224741. The next prime is 1220224769. The reversal of 1220224743 is 3474220221.

It is not a de Polignac number, because 1220224743 - 2¹ = 1220224741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220224741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99421 + ... + 111017.

It is an arithmetic number, because the mean of its divisors is an integer number (76341902).

Almost surely, 2^1220224743 is an apocalyptic number.

1220224743 is a deficient number, since it is larger than the sum of its proper divisors (611980905).

1220224743 is an equidigital number, since it uses as much as digits as its factorization.

1220224743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12045 (or 12033 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 1220224743 is about 34931.7154316819. The cubic root of 1220224743 is about 1068.5953393927.

Adding to 1220224743 its reverse (3474220221), we get a palindrome (4694444964).

The spelling of 1220224743 in words is "one billion, two hundred twenty million, two hundred twenty-four thousand, seven hundred forty-three".