244581628121 has 2 divisors, whose sum is σ = 244581628122. Its totient is φ = 244581628120.

The previous prime is 244581628019. The next prime is 244581628157. The reversal of 244581628121 is 121826185442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243827576521 + 754051600 = 493789^2 + 27460^2 .

It is a cyclic number.

It is not a de Polignac number, because 244581628121 - 2¹⁰ = 244581627097 is a prime.

It is not a weakly prime, because it can be changed into another prime (244581628321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122290814060 + 122290814061.

It is an arithmetic number, because the mean of its divisors is an integer number (122290814061).

Almost surely, 2^244581628121 is an apocalyptic number.

It is an amenable number.

244581628121 is a deficient number, since it is larger than the sum of its proper divisors (1).

244581628121 is an equidigital number, since it uses as much as digits as its factorization.

244581628121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 245760, while the sum is 44.

The spelling of 244581628121 in words is "two hundred forty-four billion, five hundred eighty-one million, six hundred twenty-eight thousand, one hundred twenty-one".