244000101221 has 4 divisors (see below), whose sum is σ = 249951323244. Its totient is φ = 238048879200.

The previous prime is 244000101209. The next prime is 244000101239. The reversal of 244000101221 is 122101000442.

244000101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122101000442 = 2 ⋅61050500221.

It can be written as a sum of positive squares in 2 ways, for example, as 63383601121 + 180616500100 = 251761^2 + 424990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244000101221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 244000101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244000101421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975610950 + ... + 2975611031.

It is an arithmetic number, because the mean of its divisors is an integer number (62487830811).

Almost surely, 2^244000101221 is an apocalyptic number.

It is an amenable number.

244000101221 is a deficient number, since it is larger than the sum of its proper divisors (5951222023).

244000101221 is an equidigital number, since it uses as much as digits as its factorization.

244000101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951222022.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 244000101221 its reverse (122101000442), we get a palindrome (366101101663).

The spelling of 244000101221 in words is "two hundred forty-four billion, one hundred one thousand, two hundred twenty-one".