11102121201221 has 8 divisors (see below), whose sum is σ = 11758535319744. Its totient is φ = 10446079101120.

The previous prime is 11102121201209. The next prime is 11102121201299. The reversal of 11102121201221 is 12210212120111.

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 11102121201221 - 2³⁸ = 10827243294277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 11102121201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102121201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92943155 + ... + 93062528.

It is an arithmetic number, because the mean of its divisors is an integer number (1469816914968).

Almost surely, 2^{11102121201221} is an apocalyptic number.

It is an amenable number.

11102121201221 is a deficient number, since it is larger than the sum of its proper divisors (656414118523).

11102121201221 is a wasteful number, since it uses less digits than its factorization.

11102121201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186009211.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11102121201221 its reverse (12210212120111), we get a palindrome (23312333321332).

The spelling of 11102121201221 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, two hundred one thousand, two hundred twenty-one".