11103232121 has 8 divisors (see below), whose sum is σ = 11295842688. Its totient is φ = 10911628000.

The previous prime is 11103232109. The next prime is 11103232163. The reversal of 11103232121 is 12123230111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11103232121 is a prime.

It is a super-3 number, since 3×11103232121³ (a number of 31 digits) contains 333 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 11103232121.

It is not an unprimeable number, because it can be changed into a prime (11103232171) 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, 229340 + ... + 273501.

It is an arithmetic number, because the mean of its divisors is an integer number (1411980336).

Almost surely, 2^11103232121 is an apocalyptic number.

It is an amenable number.

11103232121 is a deficient number, since it is larger than the sum of its proper divisors (192610567).

11103232121 is an equidigital number, since it uses as much as digits as its factorization.

11103232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503223.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11103232121 its reverse (12123230111), we get a palindrome (23226462232).

The spelling of 11103232121 in words is "eleven billion, one hundred three million, two hundred thirty-two thousand, one hundred twenty-one".