123216223 has 8 divisors (see below), whose sum is σ = 133364000. Its totient is φ = 113164128.

The previous prime is 123216143. The next prime is 123216251. The reversal of 123216223 is 322612321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123216223 - 2²¹ = 121119071 is a prime.

It is a super-2 number, since 2×123216223² = 30364475220771458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123216194 and 123216203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123216823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21228 + ... + 26401.

It is an arithmetic number, because the mean of its divisors is an integer number (16670500).

Almost surely, 2^123216223 is an apocalyptic number.

123216223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123216223 is a deficient number, since it is larger than the sum of its proper divisors (10147777).

123216223 is a wasteful number, since it uses less digits than its factorization.

123216223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47841.

The product of its digits is 864, while the sum is 22.

The square root of 123216223 is about 11100.2803117759. The cubic root of 123216223 is about 497.6102268325.

Adding to 123216223 its reverse (322612321), we get a palindrome (445828544).

The spelling of 123216223 in words is "one hundred twenty-three million, two hundred sixteen thousand, two hundred twenty-three".