244221001 has 4 divisors (see below), whose sum is σ = 248360400. Its totient is φ = 240081604.

The previous prime is 244220981. The next prime is 244221077. The reversal of 244221001 is 100122442.

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 244221001 - 2¹⁷ = 244089929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244221091) 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, 2069611 + ... + 2069728.

It is an arithmetic number, because the mean of its divisors is an integer number (62090100).

Almost surely, 2^244221001 is an apocalyptic number.

It is an amenable number.

244221001 is a deficient number, since it is larger than the sum of its proper divisors (4139399).

244221001 is an equidigital number, since it uses as much as digits as its factorization.

244221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139398.

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

The square root of 244221001 is about 15627.5718203437. The cubic root of 244221001 is about 625.0685799946.

Adding to 244221001 its reverse (100122442), we get a palindrome (344343443).

The spelling of 244221001 in words is "two hundred forty-four million, two hundred twenty-one thousand, one".