244122222991 has 2 divisors, whose sum is σ = 244122222992. Its totient is φ = 244122222990.

The previous prime is 244122222943. The next prime is 244122223057. The reversal of 244122222991 is 199222221442.

244122222991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 244122222991 - 2⁷ = 244122222863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244122222941) 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 as a sum of consecutive naturals, namely, 122061111495 + 122061111496.

It is an arithmetic number, because the mean of its divisors is an integer number (122061111496).

Almost surely, 2^244122222991 is an apocalyptic number.

244122222991 is a deficient number, since it is larger than the sum of its proper divisors (1).

244122222991 is an equidigital number, since it uses as much as digits as its factorization.

244122222991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The spelling of 244122222991 in words is "two hundred forty-four billion, one hundred twenty-two million, two hundred twenty-two thousand, nine hundred ninety-one".