123210213210 has 128 divisors (see below), whose sum is σ = 377573414400. Its totient is φ = 28006663680.

The previous prime is 123210213179. The next prime is 123210213299. The reversal of 123210213210 is 12312012321.

123210213210 is a `hidden beast` number, since 1 + 2 + 321 + 0 + 21 + 321 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162006 + ... + 522174.

It is an arithmetic number, because the mean of its divisors is an integer number (2949792300).

Almost surely, 2^123210213210 is an apocalyptic number.

123210213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123210213210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188786707200).

123210213210 is an abundant number, since it is smaller than the sum of its proper divisors (254363201190).

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

123210213210 is a wasteful number, since it uses less digits than its factorization.

123210213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360373 (or 360367 counting only the distinct ones).

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

Adding to 123210213210 its reverse (12312012321), we get a palindrome (135522225531).

The spelling of 123210213210 in words is "one hundred twenty-three billion, two hundred ten million, two hundred thirteen thousand, two hundred ten".