101320123123 has 4 divisors (see below), whose sum is σ = 101328701800. Its totient is φ = 101311544448.

The previous prime is 101320123117. The next prime is 101320123141. The reversal of 101320123123 is 321321023101.

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 101320123123 - 2³³ = 92730188531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101320123123.

It is not an unprimeable number, because it can be changed into a prime (101320123153) 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, 4271598 + ... + 4295251.

It is an arithmetic number, because the mean of its divisors is an integer number (25332175450).

Almost surely, 2^101320123123 is an apocalyptic number.

101320123123 is a deficient number, since it is larger than the sum of its proper divisors (8578677).

101320123123 is an equidigital number, since it uses as much as digits as its factorization.

101320123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8578676.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 101320123123 its reverse (321321023101), we get a palindrome (422641146224).

It can be divided in two parts, 1013201 and 23123, that added together give a square (1036324 = 1018²).

The spelling of 101320123123 in words is "one hundred one billion, three hundred twenty million, one hundred twenty-three thousand, one hundred twenty-three".