11103001012221 has 16 divisors (see below), whose sum is σ = 15028513598400. Its totient is φ = 7290038033280.

The previous prime is 11103001012171. The next prime is 11103001012223. The reversal of 11103001012221 is 12221010030111.

It is not a de Polignac number, because 11103001012221 - 2¹⁹ = 11103000487933 is a prime.

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 11103001012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103001012223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36533646 + ... + 36836303.

It is an arithmetic number, because the mean of its divisors is an integer number (939282099900).

Almost surely, 2^{11103001012221} is an apocalyptic number.

It is an amenable number.

11103001012221 is a deficient number, since it is larger than the sum of its proper divisors (3925512586179).

11103001012221 is an equidigital number, since it uses as much as digits as its factorization.

11103001012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73370716.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11103001012221 its reverse (12221010030111), we get a palindrome (23324011042332).

The spelling of 11103001012221 in words is "eleven trillion, one hundred three billion, one million, twelve thousand, two hundred twenty-one".