11123331001 has 4 divisors (see below), whose sum is σ = 11606954112. Its totient is φ = 10639707892.

The previous prime is 11123330923. The next prime is 11123331007. The reversal of 11123331001 is 10013332111.

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: 10013332111 = 15461 ⋅647651.

It is a cyclic number.

It is not a de Polignac number, because 11123331001 - 2¹⁷ = 11123199929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123331007) 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, 241811521 + ... + 241811566.

It is an arithmetic number, because the mean of its divisors is an integer number (2901738528).

Almost surely, 2^11123331001 is an apocalyptic number.

It is an amenable number.

11123331001 is a deficient number, since it is larger than the sum of its proper divisors (483623111).

11123331001 is an equidigital number, since it uses as much as digits as its factorization.

11123331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483623110.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11123331001 its reverse (10013332111), we get a palindrome (21136663112).

The spelling of 11123331001 in words is "eleven billion, one hundred twenty-three million, three hundred thirty-one thousand, one".