1244221 has 4 divisors (see below), whose sum is σ = 1357344. Its totient is φ = 1131100.

The previous prime is 1244203. The next prime is 1244233. The reversal of 1244221 is 1224421.

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 1244221 - 2⁹ = 1243709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244195 and 1244204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244261) 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, 56545 + ... + 56566.

It is an arithmetic number, because the mean of its divisors is an integer number (339336).

2^1244221 is an apocalyptic number.

1244221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1244221 is a deficient number, since it is larger than the sum of its proper divisors (113123).

1244221 is a wasteful number, since it uses less digits than its factorization.

1244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113122.

The product of its digits is 128, while the sum is 16.

The square root of 1244221 is about 1115.4465473522. The cubic root of 1244221 is about 107.5554716413. Note that the first 3 decimals are identical.

Adding to 1244221 its reverse (1224421), we get a palindrome (2468642).

The spelling of 1244221 in words is "one million, two hundred forty-four thousand, two hundred twenty-one".