1220441331543 has 16 divisors (see below), whose sum is σ = 1859758607616. Its totient is φ = 697380615360.

The previous prime is 1220441331493. The next prime is 1220441331553. The reversal of 1220441331543 is 3451331440221.

It is not a de Polignac number, because 1220441331543 - 2¹⁷ = 1220441200471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220441331553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483180 + ... + 1635342.

It is an arithmetic number, because the mean of its divisors is an integer number (116234912976).

Almost surely, 2^{1220441331543} is an apocalyptic number.

1220441331543 is a deficient number, since it is larger than the sum of its proper divisors (639317276073).

1220441331543 is a wasteful number, since it uses less digits than its factorization.

1220441331543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202614.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 1220441331543 its reverse (3451331440221), we get a palindrome (4671772771764).

The spelling of 1220441331543 in words is "one trillion, two hundred twenty billion, four hundred forty-one million, three hundred thirty-one thousand, five hundred forty-three".