21202332241 has 2 divisors, whose sum is σ = 21202332242. Its totient is φ = 21202332240.

The previous prime is 21202332163. The next prime is 21202332253. The reversal of 21202332241 is 14223320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12138530625 + 9063801616 = 110175^2 + 95204^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202332241 - 2¹³ = 21202324049 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202335241) 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, 10601166120 + 10601166121.

It is an arithmetic number, because the mean of its divisors is an integer number (10601166121).

Almost surely, 2^21202332241 is an apocalyptic number.

It is an amenable number.

21202332241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202332241 is an equidigital number, since it uses as much as digits as its factorization.

21202332241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21202332241 its reverse (14223320212), we get a palindrome (35425652453).

The spelling of 21202332241 in words is "twenty-one billion, two hundred two million, three hundred thirty-two thousand, two hundred forty-one".