102130223123 has 4 divisors (see below), whose sum is σ = 102379930680. Its totient is φ = 101880515568.

The previous prime is 102130223093. The next prime is 102130223131. The reversal of 102130223123 is 321322031201.

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 102130223123 - 2²⁶ = 102063114259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102130223095 and 102130223104.

It is not an unprimeable number, because it can be changed into a prime (102130225123) 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, 124853165 + ... + 124853982.

It is an arithmetic number, because the mean of its divisors is an integer number (25594982670).

Almost surely, 2^102130223123 is an apocalyptic number.

102130223123 is a deficient number, since it is larger than the sum of its proper divisors (249707557).

102130223123 is an equidigital number, since it uses as much as digits as its factorization.

102130223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249707556.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 102130223123 its reverse (321322031201), we get a palindrome (423452254324).

The spelling of 102130223123 in words is "one hundred two billion, one hundred thirty million, two hundred twenty-three thousand, one hundred twenty-three".