11321013221 has 8 divisors (see below), whose sum is σ = 13032742080. Its totient is φ = 9632894688.

The previous prime is 11321013217. The next prime is 11321013271. The reversal of 11321013221 is 12231012311.

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 11321013221 - 2² = 11321013217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321013271) 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, 5901551 + ... + 5903468.

It is an arithmetic number, because the mean of its divisors is an integer number (1629092760).

Almost surely, 2^11321013221 is an apocalyptic number.

It is an amenable number.

11321013221 is a deficient number, since it is larger than the sum of its proper divisors (1711728859).

11321013221 is a wasteful number, since it uses less digits than its factorization.

11321013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11805163.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11321013221 its reverse (12231012311), we get a palindrome (23552025532).

The spelling of 11321013221 in words is "eleven billion, three hundred twenty-one million, thirteen thousand, two hundred twenty-one".