102111002003123 has 4 divisors (see below), whose sum is σ = 102111067522488. Its totient is φ = 102110936483760.

The previous prime is 102111002003117. The next prime is 102111002003141. The reversal of 102111002003123 is 321300200111201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102111002003123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111002008123) 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, 30363533 + ... + 33558398.

It is an arithmetic number, because the mean of its divisors is an integer number (25527766880622).

Almost surely, 2^{102111002003123} is an apocalyptic number.

102111002003123 is a deficient number, since it is larger than the sum of its proper divisors (65519365).

102111002003123 is an equidigital number, since it uses as much as digits as its factorization.

102111002003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65519364.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102111002003123 its reverse (321300200111201), we get a palindrome (423411202114324).

The spelling of 102111002003123 in words is "one hundred two trillion, one hundred eleven billion, two million, three thousand, one hundred twenty-three".