1320020322011 has 4 divisors (see below), whose sum is σ = 1320070609872. Its totient is φ = 1319970034152.

The previous prime is 1320020321959. The next prime is 1320020322037. The reversal of 1320020322011 is 1102230200231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320020322011 - 2²⁶ = 1319953213147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320020322211) 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, 25104536 + ... + 25157061.

It is an arithmetic number, because the mean of its divisors is an integer number (330017652468).

Almost surely, 2^{1320020322011} is an apocalyptic number.

1320020322011 is a deficient number, since it is larger than the sum of its proper divisors (50287861).

1320020322011 is an equidigital number, since it uses as much as digits as its factorization.

1320020322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50287860.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1320020322011 its reverse (1102230200231), we get a palindrome (2422250522242).

The spelling of 1320020322011 in words is "one trillion, three hundred twenty billion, twenty million, three hundred twenty-two thousand, eleven".