21320203141 has 2 divisors, whose sum is σ = 21320203142. Its totient is φ = 21320203140.

The previous prime is 21320203133. The next prime is 21320203153. The reversal of 21320203141 is 14130202312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20593685025 + 726518116 = 143505^2 + 26954^2 .

It is a cyclic number.

It is not a de Polignac number, because 21320203141 - 2³ = 21320203133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21320263141) 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, 10660101570 + 10660101571.

It is an arithmetic number, because the mean of its divisors is an integer number (10660101571).

Almost surely, 2^21320203141 is an apocalyptic number.

It is an amenable number.

21320203141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320203141 is an equidigital number, since it uses as much as digits as its factorization.

21320203141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21320203141 its reverse (14130202312), we get a palindrome (35450405453).

The spelling of 21320203141 in words is "twenty-one billion, three hundred twenty million, two hundred three thousand, one hundred forty-one".