123221200 has 60 divisors (see below), whose sum is σ = 298909440. Its totient is φ = 48810880.

The previous prime is 123221191. The next prime is 123221221. The reversal of 123221200 is 2122321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41361 + ... + 44239.

It is an arithmetic number, because the mean of its divisors is an integer number (4981824).

Almost surely, 2^123221200 is an apocalyptic number.

123221200 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 123221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149454720).

123221200 is an abundant number, since it is smaller than the sum of its proper divisors (175688240).

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

123221200 is a wasteful number, since it uses less digits than its factorization.

123221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 123221200 is about 11100.5044930399. The cubic root of 123221200 is about 497.6169266341.

Adding to 123221200 its reverse (2122321), we get a palindrome (125343521).

The spelling of 123221200 in words is "one hundred twenty-three million, two hundred twenty-one thousand, two hundred".