124232221 has 4 divisors (see below), whose sum is σ = 128239744. Its totient is φ = 120224700.

The previous prime is 124232219. The next prime is 124232231. The reversal of 124232221 is 122232421.

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 124232221 - 2¹ = 124232219 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 (124232231) 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, 2003715 + ... + 2003776.

It is an arithmetic number, because the mean of its divisors is an integer number (32059936).

Almost surely, 2^124232221 is an apocalyptic number.

It is an amenable number.

124232221 is a deficient number, since it is larger than the sum of its proper divisors (4007523).

124232221 is an equidigital number, since it uses as much as digits as its factorization.

124232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007522.

The product of its digits is 384, while the sum is 19.

The square root of 124232221 is about 11145.9508791310. The cubic root of 124232221 is about 498.9741915399.

Adding to 124232221 its reverse (122232421), we get a palindrome (246464642).

The spelling of 124232221 in words is "one hundred twenty-four million, two hundred thirty-two thousand, two hundred twenty-one".