123220299 has 4 divisors (see below), whose sum is σ = 164293736. Its totient is φ = 82146864.

The previous prime is 123220289. The next prime is 123220309. The reversal of 123220299 is 992022321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (123220289) and next prime (123220309).

It is not a de Polignac number, because 123220299 - 2²⁵ = 89665867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123220219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20536714 + ... + 20536719.

It is an arithmetic number, because the mean of its divisors is an integer number (41073434).

Almost surely, 2^123220299 is an apocalyptic number.

123220299 is a deficient number, since it is larger than the sum of its proper divisors (41073437).

123220299 is an equidigital number, since it uses as much as digits as its factorization.

123220299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41073436.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 123220299 is about 11100.4639092247. The cubic root of 123220299 is about 497.6157137639.

The spelling of 123220299 in words is "one hundred twenty-three million, two hundred twenty thousand, two hundred ninety-nine".