1321100011 has 8 divisors (see below), whose sum is σ = 1647085824. Its totient is φ = 1029428520.

The previous prime is 1321100009. The next prime is 1321100041. The reversal of 1321100011 is 1100011231.

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 1321100011 - 2¹ = 1321100009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321100041) 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 7 ways as a sum of consecutive naturals, for example, 8578495 + ... + 8578648.

It is an arithmetic number, because the mean of its divisors is an integer number (205885728).

Almost surely, 2^1321100011 is an apocalyptic number.

1321100011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1321100011 is a deficient number, since it is larger than the sum of its proper divisors (325985813).

1321100011 is a wasteful number, since it uses less digits than its factorization.

1321100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157161.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1321100011 is about 36346.9394997708. The cubic root of 1321100011 is about 1097.2659404042.

Adding to 1321100011 its reverse (1100011231), we get a palindrome (2421111242).

The spelling of 1321100011 in words is "one billion, three hundred twenty-one million, one hundred thousand, eleven".