11001324221 has 4 divisors (see below), whose sum is σ = 11269649244. Its totient is φ = 10732999200.

The previous prime is 11001324211. The next prime is 11001324239. The reversal of 11001324221 is 12242310011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12242310011 = 17 ⋅720135883.

It can be written as a sum of positive squares in 2 ways, for example, as 3783972196 + 7217352025 = 61514^2 + 84955^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001324221 - 2⁶ = 11001324157 is a prime.

It is a super-2 number, since 2×11001324221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11001324221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001324211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134162450 + ... + 134162531.

It is an arithmetic number, because the mean of its divisors is an integer number (2817412311).

Almost surely, 2^11001324221 is an apocalyptic number.

It is an amenable number.

11001324221 is a deficient number, since it is larger than the sum of its proper divisors (268325023).

11001324221 is an equidigital number, since it uses as much as digits as its factorization.

11001324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268325022.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11001324221 its reverse (12242310011), we get a palindrome (23243634232).

The spelling of 11001324221 in words is "eleven billion, one million, three hundred twenty-four thousand, two hundred twenty-one".