11223003121 has 4 divisors (see below), whose sum is σ = 12243276144. Its totient is φ = 10202730100.

The previous prime is 11223003119. The next prime is 11223003167. The reversal of 11223003121 is 12130032211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12130032211 = 11 ⋅1102730201.

It is a cyclic number.

It is not a de Polignac number, because 11223003121 - 2¹ = 11223003119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11223003095 and 11223003104.

It is not an unprimeable number, because it can be changed into a prime (11223003221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510136495 + ... + 510136516.

It is an arithmetic number, because the mean of its divisors is an integer number (3060819036).

Almost surely, 2^11223003121 is an apocalyptic number.

11223003121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11223003121 is a deficient number, since it is larger than the sum of its proper divisors (1020273023).

11223003121 is a wasteful number, since it uses less digits than its factorization.

11223003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020273022.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11223003121 its reverse (12130032211), we get a palindrome (23353035332).

The spelling of 11223003121 in words is "eleven billion, two hundred twenty-three million, three thousand, one hundred twenty-one".