1220554105424 has 40 divisors (see below), whose sum is σ = 2373813352680. Its totient is φ = 607961088000.

The previous prime is 1220554105417. The next prime is 1220554105427. The reversal of 1220554105424 is 4245014550221.

It can be written as a sum of positive squares in 4 ways, for example, as 380728489024 + 839825616400 = 617032^2 + 916420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220554105427) 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 7 ways as a sum of consecutive naturals, for example, 4810214 + ... + 5057594.

It is an arithmetic number, because the mean of its divisors is an integer number (59345333817).

Almost surely, 2^{1220554105424} is an apocalyptic number.

It is an amenable number.

1220554105424 is a deficient number, since it is larger than the sum of its proper divisors (1153259247256).

1220554105424 is a wasteful number, since it uses less digits than its factorization.

1220554105424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248559 (or 248553 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 1220554105424 its reverse (4245014550221), we get a palindrome (5465568655645).

The spelling of 1220554105424 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, one hundred five thousand, four hundred twenty-four".