124443221 has 4 divisors (see below), whose sum is σ = 142220832. Its totient is φ = 106665612.

The previous prime is 124443199. The next prime is 124443227. The reversal of 124443221 is 122344421.

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 124443221 - 2⁶ = 124443157 is a prime.

It is a super-2 number, since 2×124443221² = 30972230505709682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124443227) 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, 8888795 + ... + 8888808.

It is an arithmetic number, because the mean of its divisors is an integer number (35555208).

Almost surely, 2^124443221 is an apocalyptic number.

It is an amenable number.

124443221 is a deficient number, since it is larger than the sum of its proper divisors (17777611).

124443221 is an equidigital number, since it uses as much as digits as its factorization.

124443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17777610.

The product of its digits is 1536, while the sum is 23.

The square root of 124443221 is about 11155.4121842270. The cubic root of 124443221 is about 499.2565230319.

Adding to 124443221 its reverse (122344421), we get a palindrome (246787642).

The spelling of 124443221 in words is "one hundred twenty-four million, four hundred forty-three thousand, two hundred twenty-one".