123221305 has 8 divisors (see below), whose sum is σ = 148099392. Its totient is φ = 98421168.

The previous prime is 123221297. The next prime is 123221341. The reversal of 123221305 is 503122321.

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 123221305 - 2³ = 123221297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15949 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (18512424).

Almost surely, 2^123221305 is an apocalyptic number.

It is an amenable number.

123221305 is a deficient number, since it is larger than the sum of its proper divisors (24878087).

123221305 is an equidigital number, since it uses as much as digits as its factorization.

123221305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38975.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123221305 is about 11100.5092225537. The cubic root of 123221305 is about 497.6170679782.

Adding to 123221305 its reverse (503122321), we get a palindrome (626343626).

The spelling of 123221305 in words is "one hundred twenty-three million, two hundred twenty-one thousand, three hundred five".