1220552242443 has 40 divisors (see below), whose sum is σ = 1828872539648. Its totient is φ = 811213459056.

The previous prime is 1220552242361. The next prime is 1220552242493. The reversal of 1220552242443 is 3442422550221.

1220552242443 is a `hidden beast` number, since 1 + 2 + 20 + 552 + 2 + 42 + 4 + 43 = 666.

It is not a de Polignac number, because 1220552242443 - 2¹⁴ = 1220552226059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220552242398 and 1220552242407.

It is not an unprimeable number, because it can be changed into a prime (1220552242493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131477880 + ... + 131487162.

Almost surely, 2^{1220552242443} is an apocalyptic number.

1220552242443 is a deficient number, since it is larger than the sum of its proper divisors (608320297205).

1220552242443 is an equidigital number, since it uses as much as digits as its factorization.

1220552242443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14085 (or 14076 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 1220552242443 its reverse (3442422550221), we get a palindrome (4662974792664).

The spelling of 1220552242443 in words is "one trillion, two hundred twenty billion, five hundred fifty-two million, two hundred forty-two thousand, four hundred forty-three".