123221008 has 10 divisors (see below), whose sum is σ = 238740734. Its totient is φ = 61610496.

The previous prime is 123220967. The next prime is 123221009. The reversal of 123221008 is 800122321.

It can be written as a sum of positive squares in only one way, i.e., 91546624 + 31674384 = 9568^2 + 5628^2 .

It is not an unprimeable number, because it can be changed into a prime (123221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850641 + ... + 3850672.

Almost surely, 2^123221008 is an apocalyptic number.

It is an amenable number.

123221008 is a deficient number, since it is larger than the sum of its proper divisors (115519726).

123221008 is an equidigital number, since it uses as much as digits as its factorization.

123221008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701321 (or 7701315 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 123221008 is about 11100.4958447810. The cubic root of 123221008 is about 497.6166681761.

Adding to 123221008 its reverse (800122321), we get a palindrome (923343329).

The spelling of 123221008 in words is "one hundred twenty-three million, two hundred twenty-one thousand, eight".