11103013221 has 8 divisors (see below), whose sum is σ = 14811119424. Its totient is φ = 7398457920.

The previous prime is 11103013217. The next prime is 11103013247. The reversal of 11103013221 is 12231030111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11103013221 - 2² = 11103013217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11103013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103013211) 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, 880420 + ... + 892941.

It is an arithmetic number, because the mean of its divisors is an integer number (1851389928).

Almost surely, 2^11103013221 is an apocalyptic number.

It is an amenable number.

11103013221 is a deficient number, since it is larger than the sum of its proper divisors (3708106203).

11103013221 is a wasteful number, since it uses less digits than its factorization.

11103013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775451.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11103013221 its reverse (12231030111), we get a palindrome (23334043332).

It can be divided in two parts, 111030 and 13221, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 11103013221 in words is "eleven billion, one hundred three million, thirteen thousand, two hundred twenty-one".