1220304430444 has 72 divisors (see below), whose sum is σ = 2382045058512. Its totient is φ = 542482813440.

The previous prime is 1220304430399. The next prime is 1220304430447. The reversal of 1220304430444 is 4440344030221.

It is a super-2 number, since 2×1220304430444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220304430447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161049984 + ... + 161057560.

It is an arithmetic number, because the mean of its divisors is an integer number (33083959146).

Almost surely, 2^{1220304430444} is an apocalyptic number.

It is an amenable number.

1220304430444 is a deficient number, since it is larger than the sum of its proper divisors (1161740628068).

1220304430444 is a wasteful number, since it uses less digits than its factorization.

1220304430444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343 (or 9294 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 1220304430444 its reverse (4440344030221), we get a palindrome (5660648460665).

The spelling of 1220304430444 in words is "one trillion, two hundred twenty billion, three hundred four million, four hundred thirty thousand, four hundred forty-four".