11000001321 has 48 divisors (see below), whose sum is σ = 17059550976. Its totient is φ = 6812201088.

The previous prime is 11000001301. The next prime is 11000001347. The reversal of 11000001321 is 12310000011.

It is not a de Polignac number, because 11000001321 - 2⁷ = 11000001193 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11000001301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5689671 + ... + 5691603.

It is an arithmetic number, because the mean of its divisors is an integer number (355407312).

Almost surely, 2^11000001321 is an apocalyptic number.

It is an amenable number.

11000001321 is a deficient number, since it is larger than the sum of its proper divisors (6059549655).

11000001321 is a wasteful number, since it uses less digits than its factorization.

11000001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2739 counting only the distinct ones).

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

Adding to 11000001321 its reverse (12310000011), we get a palindrome (23310001332).

The spelling of 11000001321 in words is "eleven billion, one thousand, three hundred twenty-one".