244223221 has 4 divisors (see below), whose sum is σ = 266425344. Its totient is φ = 222021100.

The previous prime is 244223219. The next prime is 244223237. The reversal of 244223221 is 122322442.

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 244223221 - 2¹ = 244223219 is a prime.

It is a super-2 number, since 2×244223221² = 119289963351229682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244223192 and 244223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244223261) 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, 11101045 + ... + 11101066.

It is an arithmetic number, because the mean of its divisors is an integer number (66606336).

Almost surely, 2^244223221 is an apocalyptic number.

It is an amenable number.

244223221 is a deficient number, since it is larger than the sum of its proper divisors (22202123).

244223221 is a wasteful number, since it uses less digits than its factorization.

244223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22202122.

The product of its digits is 1536, while the sum is 22.

The square root of 244223221 is about 15627.6428484913. The cubic root of 244223221 is about 625.0704739732.

Adding to 244223221 its reverse (122322442), we get a palindrome (366545663).

The spelling of 244223221 in words is "two hundred forty-four million, two hundred twenty-three thousand, two hundred twenty-one".