1111323111001 has 4 divisors (see below), whose sum is σ = 1122112655872. Its totient is φ = 1100533566132.

The previous prime is 1111323110987. The next prime is 1111323111011. The reversal of 1111323111001 is 1001113231111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1111323111001 - 2¹⁷ = 1111322979929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111323111011) 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, 5394772281 + ... + 5394772486.

It is an arithmetic number, because the mean of its divisors is an integer number (280528163968).

Almost surely, 2^{1111323111001} is an apocalyptic number.

It is an amenable number.

1111323111001 is a deficient number, since it is larger than the sum of its proper divisors (10789544871).

1111323111001 is a wasteful number, since it uses less digits than its factorization.

1111323111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10789544870.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1111323111001 its reverse (1001113231111), we get a palindrome (2112436342112).

The spelling of 1111323111001 in words is "one trillion, one hundred eleven billion, three hundred twenty-three million, one hundred eleven thousand, one".