244820101 has 2 divisors, whose sum is σ = 244820102. Its totient is φ = 244820100.

The previous prime is 244820099. The next prime is 244820123. The reversal of 244820101 is 101028442.

244820101 = T₁₂₇₇₄ + T₁₂₇₇₅ + T₁₂₇₇₆.

244820101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (244820123) can be obtained adding 244820101 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138627076 + 106193025 = 11774^2 + 10305^2 .

It is a cyclic number.

It is not a de Polignac number, because 244820101 - 2¹ = 244820099 is a prime.

Together with 244820099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244823101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122410050 + 122410051.

It is an arithmetic number, because the mean of its divisors is an integer number (122410051).

Almost surely, 2^244820101 is an apocalyptic number.

244820101 is the 12776-th centered triangular number.

It is an amenable number.

244820101 is a deficient number, since it is larger than the sum of its proper divisors (1).

244820101 is an equidigital number, since it uses as much as digits as its factorization.

244820101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 244820101 is about 15646.7281244355. The cubic root of 244820101 is about 625.5792824451.

Adding to 244820101 its reverse (101028442), we get a palindrome (345848543).

The spelling of 244820101 in words is "two hundred forty-four million, eight hundred twenty thousand, one hundred one".