1320420421113 has 4 divisors (see below), whose sum is σ = 1760560561488. Its totient is φ = 880280280740.

The previous prime is 1320420421081. The next prime is 1320420421127. The reversal of 1320420421113 is 3111240240231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320420421113 - 2⁵ = 1320420421081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320420421163) 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, 220070070183 + ... + 220070070188.

It is an arithmetic number, because the mean of its divisors is an integer number (440140140372).

Almost surely, 2^{1320420421113} is an apocalyptic number.

It is an amenable number.

1320420421113 is a deficient number, since it is larger than the sum of its proper divisors (440140140375).

1320420421113 is an equidigital number, since it uses as much as digits as its factorization.

1320420421113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440140140374.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1320420421113 its reverse (3111240240231), we get a palindrome (4431660661344).

The spelling of 1320420421113 in words is "one trillion, three hundred twenty billion, four hundred twenty million, four hundred twenty-one thousand, one hundred thirteen".