123213225 has 12 divisors (see below), whose sum is σ = 203712656. Its totient is φ = 65713680.

The previous prime is 123213203. The next prime is 123213247. The reversal of 123213225 is 522312321.

It is an interprime number because it is at equal distance from previous prime (123213203) and next prime (123213247).

It is not a de Polignac number, because 123213225 - 2⁵ = 123213193 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 821347 + ... + 821496.

Almost surely, 2^123213225 is an apocalyptic number.

123213225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123213225 is a deficient number, since it is larger than the sum of its proper divisors (80499431).

123213225 is a wasteful number, since it uses less digits than its factorization.

123213225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642856 (or 1642851 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 123213225 is about 11100.1452693197. The cubic root of 123213225 is about 497.6061909798.

Adding to 123213225 its reverse (522312321), we get a palindrome (645525546).

The spelling of 123213225 in words is "one hundred twenty-three million, two hundred thirteen thousand, two hundred twenty-five".