1320100011 has 20 divisors (see below), whose sum is σ = 1974341512. Its totient is φ = 879022368.

The previous prime is 1320100003. The next prime is 1320100021. The reversal of 1320100011 is 1100010231.

It is not a de Polignac number, because 1320100011 - 2³ = 1320100003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320099966 and 1320100002.

It is not an unprimeable number, because it can be changed into a prime (1320100021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 62295 + ... + 80751.

Almost surely, 2^1320100011 is an apocalyptic number.

1320100011 is a deficient number, since it is larger than the sum of its proper divisors (654241501).

1320100011 is an equidigital number, since it uses as much as digits as its factorization.

1320100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19352 (or 19343 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1320100011 is about 36333.1805791896. The cubic root of 1320100011 is about 1096.9890138772.

Adding to 1320100011 its reverse (1100010231), we get a palindrome (2420110242).

The spelling of 1320100011 in words is "one billion, three hundred twenty million, one hundred thousand, eleven".