21410324120461 has 2 divisors, whose sum is σ = 21410324120462. Its totient is φ = 21410324120460.

The previous prime is 21410324120417. The next prime is 21410324120491. The reversal of 21410324120461 is 16402142301412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18388745004100 + 3021579116361 = 4288210^2 + 1738269^2 .

It is a cyclic number.

It is not a de Polignac number, because 21410324120461 - 2⁹ = 21410324119949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21410324120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705162060230 + 10705162060231.

It is an arithmetic number, because the mean of its divisors is an integer number (10705162060231).

Almost surely, 2^{21410324120461} is an apocalyptic number.

It is an amenable number.

21410324120461 is a deficient number, since it is larger than the sum of its proper divisors (1).

21410324120461 is an equidigital number, since it uses as much as digits as its factorization.

21410324120461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 21410324120461 its reverse (16402142301412), we get a palindrome (37812466421873).

The spelling of 21410324120461 in words is "twenty-one trillion, four hundred ten billion, three hundred twenty-four million, one hundred twenty thousand, four hundred sixty-one".