123222400 has 96 divisors (see below), whose sum is σ = 347946480. Its totient is φ = 42240000.

The previous prime is 123222373. The next prime is 123222433. The reversal of 123222400 is 4222321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19650 + ... + 25150.

Almost surely, 2^123222400 is an apocalyptic number.

123222400 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 123222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173973240).

123222400 is an abundant number, since it is smaller than the sum of its proper divisors (224724080).

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

123222400 is an equidigital number, since it uses as much as digits as its factorization.

123222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 123222400 is about 11100.5585445058. The cubic root of 123222400 is about 497.6185419902.

Adding to 123222400 its reverse (4222321), we get a palindrome (127444721).

It can be divided in two parts, 1232 and 22400, that added together give a palindrome (23632).

The spelling of 123222400 in words is "one hundred twenty-three million, two hundred twenty-two thousand, four hundred".