11011320321 has 8 divisors (see below), whose sum is σ = 14682245280. Its totient is φ = 7340637792.

The previous prime is 11011320277. The next prime is 11011320347. The reversal of 11011320321 is 12302311011.

It is a happy number.

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

It is not a de Polignac number, because 11011320321 - 2⁷ = 11011320193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011320321.

It is not an unprimeable number, because it can be changed into a prime (11011320521) 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, 145821 + ... + 208053.

It is an arithmetic number, because the mean of its divisors is an integer number (1835280660).

Almost surely, 2^11011320321 is an apocalyptic number.

It is an amenable number.

11011320321 is a deficient number, since it is larger than the sum of its proper divisors (3670924959).

11011320321 is an equidigital number, since it uses as much as digits as its factorization.

11011320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121215.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11011320321 its reverse (12302311011), we get a palindrome (23313631332).

The spelling of 11011320321 in words is "eleven billion, eleven million, three hundred twenty thousand, three hundred twenty-one".