123024221 has 4 divisors (see below), whose sum is σ = 129499200. Its totient is φ = 116549244.

The previous prime is 123024203. The next prime is 123024229. The reversal of 123024221 is 122420321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123024221 - 2⁶ = 123024157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123024221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123024229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237461 + ... + 3237498.

It is an arithmetic number, because the mean of its divisors is an integer number (32374800).

Almost surely, 2^123024221 is an apocalyptic number.

It is an amenable number.

123024221 is a deficient number, since it is larger than the sum of its proper divisors (6474979).

123024221 is an equidigital number, since it uses as much as digits as its factorization.

123024221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474978.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123024221 is about 11091.6284196686. The cubic root of 123024221 is about 497.3516249868.

Adding to 123024221 its reverse (122420321), we get a palindrome (245444542).

The spelling of 123024221 in words is "one hundred twenty-three million, twenty-four thousand, two hundred twenty-one".