123101102320 has 80 divisors (see below), whose sum is σ = 341318868480. Its totient is φ = 40371040512.

The previous prime is 123101102309. The next prime is 123101102323. The reversal of 123101102320 is 23201101321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 123101102294 and 123101102303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123101102323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4765890 + ... + 4791649.

It is an arithmetic number, because the mean of its divisors is an integer number (4266485856).

Almost surely, 2^123101102320 is an apocalyptic number.

123101102320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123101102320 is an abundant number, since it is smaller than the sum of its proper divisors (218217766160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123101102320 is a wasteful number, since it uses less digits than its factorization.

123101102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557582 (or 9557576 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123101102320 its reverse (23201101321), we get a palindrome (146302203641).

Subtracting from 123101102320 its reverse (23201101321), we obtain a palindrome (99900000999).

The spelling of 123101102320 in words is "one hundred twenty-three billion, one hundred one million, one hundred two thousand, three hundred twenty".