11003221321 has 8 divisors (see below), whose sum is σ = 12157012224. Its totient is φ = 9905712960.

The previous prime is 11003221319. The next prime is 11003221331. The reversal of 11003221321 is 12312230011.

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 11003221321 - 2¹ = 11003221319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003221295 and 11003221304.

It is not an unprimeable number, because it can be changed into a prime (11003221301) 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, 14070225 + ... + 14071006.

It is an arithmetic number, because the mean of its divisors is an integer number (1519626528).

Almost surely, 2^11003221321 is an apocalyptic number.

It is an amenable number.

11003221321 is a deficient number, since it is larger than the sum of its proper divisors (1153790903).

11003221321 is a wasteful number, since it uses less digits than its factorization.

11003221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28141271.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11003221321 its reverse (12312230011), we get a palindrome (23315451332).

It can be divided in two parts, 11003 and 221321, that added together give a square (232324 = 482²).

The spelling of 11003221321 in words is "eleven billion, three million, two hundred twenty-one thousand, three hundred twenty-one".