11003002123 has 4 divisors (see below), whose sum is σ = 11650237560. Its totient is φ = 10355766688.

The previous prime is 11003002117. The next prime is 11003002139. The reversal of 11003002123 is 32120030011.

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

It is a cyclic number.

It is not a de Polignac number, because 11003002123 - 2⁵ = 11003002091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003002193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323617693 + ... + 323617726.

It is an arithmetic number, because the mean of its divisors is an integer number (2912559390).

Almost surely, 2^11003002123 is an apocalyptic number.

11003002123 is a deficient number, since it is larger than the sum of its proper divisors (647235437).

11003002123 is an equidigital number, since it uses as much as digits as its factorization.

11003002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647235436.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 11003002123 its reverse (32120030011), we get a palindrome (43123032134).

The spelling of 11003002123 in words is "eleven billion, three million, two thousand, one hundred twenty-three".