1320043220013 has 32 divisors (see below), whose sum is σ = 2030264248320. Its totient is φ = 747273885120.

The previous prime is 1320043220011. The next prime is 1320043220021. The reversal of 1320043220013 is 3100223400231.

It is not a de Polignac number, because 1320043220013 - 2¹ = 1320043220011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320043220011) 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 31 ways as a sum of consecutive naturals, for example, 15915256 + ... + 15997982.

It is an arithmetic number, because the mean of its divisors is an integer number (63445757760).

Almost surely, 2^{1320043220013} is an apocalyptic number.

It is an amenable number.

1320043220013 is a deficient number, since it is larger than the sum of its proper divisors (710221028307).

1320043220013 is a wasteful number, since it uses less digits than its factorization.

1320043220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89817.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1320043220013 its reverse (3100223400231), we get a palindrome (4420266620244).

The spelling of 1320043220013 in words is "one trillion, three hundred twenty billion, forty-three million, two hundred twenty thousand, thirteen".