123200212220 has 96 divisors (see below), whose sum is σ = 272261545920. Its totient is φ = 46764103680.

The previous prime is 123200212189. The next prime is 123200212273. The reversal of 123200212220 is 22212002321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12400655 + ... + 12410585.

It is an arithmetic number, because the mean of its divisors is an integer number (2836057770).

Almost surely, 2^123200212220 is an apocalyptic number.

123200212220 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 123200212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136130772960).

123200212220 is an abundant number, since it is smaller than the sum of its proper divisors (149061333700).

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

123200212220 is a wasteful number, since it uses less digits than its factorization.

123200212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335 (or 10333 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 123200212220 its reverse (22212002321), we get a palindrome (145412214541).

The spelling of 123200212220 in words is "one hundred twenty-three billion, two hundred million, two hundred twelve thousand, two hundred twenty".