21441200330117 has 2 divisors, whose sum is σ = 21441200330118. Its totient is φ = 21441200330116.

The previous prime is 21441200330113. The next prime is 21441200330149. The reversal of 21441200330117 is 71103300214412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14441413634596 + 6999786695521 = 3800186^2 + 2645711^2 .

It is a cyclic number.

It is not a de Polignac number, because 21441200330117 - 2² = 21441200330113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21441200330117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21441200330111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720600165058 + 10720600165059.

It is an arithmetic number, because the mean of its divisors is an integer number (10720600165059).

Almost surely, 2^{21441200330117} is an apocalyptic number.

It is an amenable number.

21441200330117 is a deficient number, since it is larger than the sum of its proper divisors (1).

21441200330117 is an equidigital number, since it uses as much as digits as its factorization.

21441200330117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 21441200330117 its reverse (71103300214412), we get a palindrome (92544500544529).

The spelling of 21441200330117 in words is "twenty-one trillion, four hundred forty-one billion, two hundred million, three hundred thirty thousand, one hundred seventeen".