1320111101 has 8 divisors (see below), whose sum is σ = 1337248440. Its totient is φ = 1303025152.

The previous prime is 1320111097. The next prime is 1320111103. The reversal of 1320111101 is 1011110231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 462207001 + 857904100 = 21499^2 + 29290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320111101 - 2² = 1320111097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320111103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40271 + ... + 65283.

It is an arithmetic number, because the mean of its divisors is an integer number (167156055).

Almost surely, 2^1320111101 is an apocalyptic number.

It is an amenable number.

1320111101 is a deficient number, since it is larger than the sum of its proper divisors (17137339).

1320111101 is an equidigital number, since it uses as much as digits as its factorization.

1320111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25695.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1320111101 is about 36333.3331941896. Note that the first 3 decimals coincide. The cubic root of 1320111101 is about 1096.9920857591.

Adding to 1320111101 its reverse (1011110231), we get a palindrome (2331221332).

The spelling of 1320111101 in words is "one billion, three hundred twenty million, one hundred eleven thousand, one hundred one".