1220173124043 has 4 divisors (see below), whose sum is σ = 1626897498728. Its totient is φ = 813448749360.

The previous prime is 1220173124041. The next prime is 1220173124069. The reversal of 1220173124043 is 3404213710221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1220173124043 - 2¹ = 1220173124041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220173124043.

It is not an unprimeable number, because it can be changed into a prime (1220173124041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203362187338 + ... + 203362187343.

It is an arithmetic number, because the mean of its divisors is an integer number (406724374682).

Almost surely, 2^{1220173124043} is an apocalyptic number.

1220173124043 is a deficient number, since it is larger than the sum of its proper divisors (406724374685).

1220173124043 is an equidigital number, since it uses as much as digits as its factorization.

1220173124043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406724374684.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 1220173124043 its reverse (3404213710221), we get a palindrome (4624386834264).

The spelling of 1220173124043 in words is "one trillion, two hundred twenty billion, one hundred seventy-three million, one hundred twenty-four thousand, forty-three".