123221300 has 18 divisors (see below), whose sum is σ = 267390438. Its totient is φ = 49288480.

The previous prime is 123221297. The next prime is 123221341. The reversal of 123221300 is 3122321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 55696 + 123165604 = 236^2 + 11098^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616007 + ... + 616206.

Almost surely, 2^123221300 is an apocalyptic number.

123221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123221300 is an abundant number, since it is smaller than the sum of its proper divisors (144169138).

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

123221300 is a wasteful number, since it uses less digits than its factorization.

123221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232227 (or 1232220 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123221300 is about 11100.5089973388. The cubic root of 123221300 is about 497.6170612475.

Adding to 123221300 its reverse (3122321), we get a palindrome (126343621).

The spelling of 123221300 in words is "one hundred twenty-three million, two hundred twenty-one thousand, three hundred".