1220331024424 has 8 divisors (see below), whose sum is σ = 2288120670810. Its totient is φ = 610165512208.

The previous prime is 1220331024391. The next prime is 1220331024433. The reversal of 1220331024424 is 4244201330221.

It can be written as a sum of positive squares in only one way, i.e., 1189255680900 + 31075343524 = 1090530^2 + 176282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1220331024392 and 1220331024401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76270689019 + ... + 76270689034.

Almost surely, 2^{1220331024424} is an apocalyptic number.

It is an amenable number.

1220331024424 is a deficient number, since it is larger than the sum of its proper divisors (1067789646386).

1220331024424 is a wasteful number, since it uses less digits than its factorization.

1220331024424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152541378059 (or 152541378055 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1220331024424 its reverse (4244201330221), we get a palindrome (5464532354645).

The spelling of 1220331024424 in words is "one trillion, two hundred twenty billion, three hundred thirty-one million, twenty-four thousand, four hundred twenty-four".