123202100320 has 96 divisors (see below), whose sum is σ = 313570262880. Its totient is φ = 45473218560.

The previous prime is 123202100309. The next prime is 123202100321. The reversal of 123202100320 is 23001202321.

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 = 123202100294 and 123202100303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123202100321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6582175 + ... + 6600865.

It is an arithmetic number, because the mean of its divisors is an integer number (3266356905).

Almost surely, 2^123202100320 is an apocalyptic number.

123202100320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123202100320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156785131440).

123202100320 is an abundant number, since it is smaller than the sum of its proper divisors (190368162560).

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

123202100320 is a wasteful number, since it uses less digits than its factorization.

123202100320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21888 (or 21880 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 123202100320 its reverse (23001202321), we get a palindrome (146203302641).

The spelling of 123202100320 in words is "one hundred twenty-three billion, two hundred two million, one hundred thousand, three hundred twenty".