1320101111 has 12 divisors (see below), whose sum is σ = 1545942600. Its totient is φ = 1123914960.

The previous prime is 1320101093. The next prime is 1320101113. The reversal of 1320101111 is 1111010231.

It is a happy number.

It is not a de Polignac number, because 1320101111 - 2⁶ = 1320101047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320101092 and 1320101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320101113) 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 11 ways as a sum of consecutive naturals, for example, 83105 + ... + 97706.

It is an arithmetic number, because the mean of its divisors is an integer number (128828550).

Almost surely, 2^1320101111 is an apocalyptic number.

1320101111 is a deficient number, since it is larger than the sum of its proper divisors (225841489).

1320101111 is a wasteful number, since it uses less digits than its factorization.

1320101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180974 (or 180967 counting only the distinct ones).

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

The square root of 1320101111 is about 36333.1957168648. The cubic root of 1320101111 is about 1096.9893185732.

Adding to 1320101111 its reverse (1111010231), we get a palindrome (2431111342).

The spelling of 1320101111 in words is "one billion, three hundred twenty million, one hundred one thousand, one hundred eleven".