21303446141 has 2 divisors, whose sum is σ = 21303446142. Its totient is φ = 21303446140.

The previous prime is 21303446083. The next prime is 21303446149. The reversal of 21303446141 is 14164430312.

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., 18684156100 + 2619290041 = 136690^2 + 51179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21303446141 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303446149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651723070 + 10651723071.

It is an arithmetic number, because the mean of its divisors is an integer number (10651723071).

Almost surely, 2^21303446141 is an apocalyptic number.

It is an amenable number.

21303446141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303446141 is an equidigital number, since it uses as much as digits as its factorization.

21303446141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21303446141 its reverse (14164430312), we get a palindrome (35467876453).

The spelling of 21303446141 in words is "twenty-one billion, three hundred three million, four hundred forty-six thousand, one hundred forty-one".