1002111111223 has 4 divisors (see below), whose sum is σ = 1013370786720. Its totient is φ = 990851435728.

The previous prime is 1002111111203. The next prime is 1002111111233. The reversal of 1002111111223 is 3221111112001.

It is a happy number.

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 1002111111223 - 2⁹ = 1002111110711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002111111197 and 1002111111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002111111203) 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, 5629837615 + ... + 5629837792.

It is an arithmetic number, because the mean of its divisors is an integer number (253342696680).

Almost surely, 2^{1002111111223} is an apocalyptic number.

1002111111223 is a deficient number, since it is larger than the sum of its proper divisors (11259675497).

1002111111223 is an equidigital number, since it uses as much as digits as its factorization.

1002111111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11259675496.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1002111111223 its reverse (3221111112001), we get a palindrome (4223222223224).

The spelling of 1002111111223 in words is "one trillion, two billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-three".