123221308 has 48 divisors (see below), whose sum is σ = 263361280. Its totient is φ = 49268736.

The previous prime is 123221297. The next prime is 123221341. The reversal of 123221308 is 803122321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33916 + ... + 37372.

Almost surely, 2^123221308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123221308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131680640).

123221308 is an abundant number, since it is smaller than the sum of its proper divisors (140139972).

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

123221308 is a wasteful number, since it uses less digits than its factorization.

123221308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3552 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 123221308 is about 11100.5093576826. The cubic root of 123221308 is about 497.6170720166.

Adding to 123221308 its reverse (803122321), we get a palindrome (926343629).

The spelling of 123221308 in words is "one hundred twenty-three million, two hundred twenty-one thousand, three hundred eight".