21141304501 has 2 divisors, whose sum is σ = 21141304502. Its totient is φ = 21141304500.

The previous prime is 21141304451. The next prime is 21141304507. The reversal of 21141304501 is 10540314112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16653644401 + 4487660100 = 129049^2 + 66990^2 .

It is a cyclic number.

It is not a de Polignac number, because 21141304501 - 2¹¹ = 21141302453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141304507) 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, 10570652250 + 10570652251.

It is an arithmetic number, because the mean of its divisors is an integer number (10570652251).

Almost surely, 2^21141304501 is an apocalyptic number.

It is an amenable number.

21141304501 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141304501 is an equidigital number, since it uses as much as digits as its factorization.

21141304501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21141304501 its reverse (10540314112), we get a palindrome (31681618613).

The spelling of 21141304501 in words is "twenty-one billion, one hundred forty-one million, three hundred four thousand, five hundred one".