11103111011221 has 8 divisors (see below), whose sum is σ = 11162796068480. Its totient is φ = 11043448180992.

The previous prime is 11103111011191. The next prime is 11103111011263. The reversal of 11103111011221 is 12211011130111.

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 11103111011221 - 2¹⁷ = 11103110880149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11103111011195 and 11103111011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103111011821) 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, 4554525 + ... + 6553618.

It is an arithmetic number, because the mean of its divisors is an integer number (1395349508560).

Almost surely, 2^{11103111011221} is an apocalyptic number.

It is an amenable number.

11103111011221 is a deficient number, since it is larger than the sum of its proper divisors (59685057259).

11103111011221 is a wasteful number, since it uses less digits than its factorization.

11103111011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11113515.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 11103111011221 its reverse (12211011130111), we get a palindrome (23314122141332).

The spelling of 11103111011221 in words is "eleven trillion, one hundred three billion, one hundred eleven million, eleven thousand, two hundred twenty-one".