21246460241 has 2 divisors, whose sum is σ = 21246460242. Its totient is φ = 21246460240.

The previous prime is 21246460219. The next prime is 21246460253. The reversal of 21246460241 is 14206464212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16604899600 + 4641560641 = 128860^2 + 68129^2 .

It is a cyclic number.

It is not a de Polignac number, because 21246460241 - 2¹⁴ = 21246443857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21246460198 and 21246460207.

It is not a weakly prime, because it can be changed into another prime (21246460541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10623230120 + 10623230121.

It is an arithmetic number, because the mean of its divisors is an integer number (10623230121).

Almost surely, 2^21246460241 is an apocalyptic number.

It is an amenable number.

21246460241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21246460241 is an equidigital number, since it uses as much as digits as its factorization.

21246460241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 21246460241 in words is "twenty-one billion, two hundred forty-six million, four hundred sixty thousand, two hundred forty-one".