123383221 has 4 divisors (see below), whose sum is σ = 132874252. Its totient is φ = 113892192.

The previous prime is 123383203. The next prime is 123383243. The reversal of 123383221 is 122383321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122383321 = 677 ⋅180773.

It can be written as a sum of positive squares in 2 ways, for example, as 78960996 + 44422225 = 8886^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 123383221 - 2¹⁷ = 123252149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123383251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4745496 + ... + 4745521.

It is an arithmetic number, because the mean of its divisors is an integer number (33218563).

Almost surely, 2^123383221 is an apocalyptic number.

It is an amenable number.

123383221 is a deficient number, since it is larger than the sum of its proper divisors (9491031).

123383221 is an equidigital number, since it uses as much as digits as its factorization.

123383221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491030.

The product of its digits is 1728, while the sum is 25.

The square root of 123383221 is about 11107.8000072021. The cubic root of 123383221 is about 497.8349331696.

The spelling of 123383221 in words is "one hundred twenty-three million, three hundred eighty-three thousand, two hundred twenty-one".