123101212320 has 96 divisors (see below), whose sum is σ = 430854258240. Its totient is φ = 32826988800.

The previous prime is 123101212307. The next prime is 123101212337. The reversal of 123101212320 is 23212101321.

123101212320 is a `hidden beast` number, since 1 + 2 + 310 + 121 + 232 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123101212293 and 123101212302.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14243506 + ... + 14252145.

It is an arithmetic number, because the mean of its divisors is an integer number (4488065190).

Almost surely, 2^123101212320 is an apocalyptic number.

123101212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123101212320 is an abundant number, since it is smaller than the sum of its proper divisors (307753045920).

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

123101212320 is a wasteful number, since it uses less digits than its factorization.

123101212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28495675 (or 28495661 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123101212320 its reverse (23212101321), we get a palindrome (146313313641).

The spelling of 123101212320 in words is "one hundred twenty-three billion, one hundred one million, two hundred twelve thousand, three hundred twenty".