1320111272171 has 4 divisors (see below), whose sum is σ = 1320771660000. Its totient is φ = 1319450884344.

The previous prime is 1320111272153. The next prime is 1320111272173. The reversal of 1320111272171 is 1712721110231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320111272171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320111272173) 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, 330190916 + ... + 330194913.

It is an arithmetic number, because the mean of its divisors is an integer number (330192915000).

Almost surely, 2^{1320111272171} is an apocalyptic number.

1320111272171 is a deficient number, since it is larger than the sum of its proper divisors (660387829).

1320111272171 is an equidigital number, since it uses as much as digits as its factorization.

1320111272171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660387828.

The product of its (nonzero) digits is 1176, while the sum is 29.

The spelling of 1320111272171 in words is "one trillion, three hundred twenty billion, one hundred eleven million, two hundred seventy-two thousand, one hundred seventy-one".