11003023121 has 4 divisors (see below), whose sum is σ = 11003486244. Its totient is φ = 11002560000.

The previous prime is 11003023093. The next prime is 11003023181. The reversal of 11003023121 is 12132030011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8568094096 + 2434929025 = 92564^2 + 49345^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003023121 - 2¹⁴ = 11003006737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003023096 and 11003023105.

It is not an unprimeable number, because it can be changed into a prime (11003023181) 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, 193880 + ... + 244121.

It is an arithmetic number, because the mean of its divisors is an integer number (2750871561).

Almost surely, 2^11003023121 is an apocalyptic number.

It is an amenable number.

11003023121 is a deficient number, since it is larger than the sum of its proper divisors (463123).

11003023121 is an equidigital number, since it uses as much as digits as its factorization.

11003023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463122.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11003023121 its reverse (12132030011), we get a palindrome (23135053132).

The spelling of 11003023121 in words is "eleven billion, three million, twenty-three thousand, one hundred twenty-one".