1002011110123 has 4 divisors (see below), whose sum is σ = 1002794544640. Its totient is φ = 1001227675608.

The previous prime is 1002011110117. The next prime is 1002011110171. The reversal of 1002011110123 is 3210111102001.

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 1002011110123 - 2⁹ = 1002011109611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002011110103) 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, 391715340 + ... + 391717897.

It is an arithmetic number, because the mean of its divisors is an integer number (250698636160).

Almost surely, 2^{1002011110123} is an apocalyptic number.

1002011110123 is a deficient number, since it is larger than the sum of its proper divisors (783434517).

1002011110123 is an equidigital number, since it uses as much as digits as its factorization.

1002011110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783434516.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1002011110123 its reverse (3210111102001), we get a palindrome (4212122212124).

The spelling of 1002011110123 in words is "one trillion, two billion, eleven million, one hundred ten thousand, one hundred twenty-three".