21241033049 has 2 divisors, whose sum is σ = 21241033050. Its totient is φ = 21241033048.

The previous prime is 21241033019. The next prime is 21241033097. The reversal of 21241033049 is 94033014212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16343832649 + 4897200400 = 127843^2 + 69980^2 .

It is a cyclic number.

It is not a de Polignac number, because 21241033049 - 2²⁸ = 20972597593 is a prime.

It is not a weakly prime, because it can be changed into another prime (21241033019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10620516524 + 10620516525.

It is an arithmetic number, because the mean of its divisors is an integer number (10620516525).

Almost surely, 2^21241033049 is an apocalyptic number.

It is an amenable number.

21241033049 is a deficient number, since it is larger than the sum of its proper divisors (1).

21241033049 is an equidigital number, since it uses as much as digits as its factorization.

21241033049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 21241033049 in words is "twenty-one billion, two hundred forty-one million, thirty-three thousand, forty-nine".