21334110020077 has 2 divisors, whose sum is σ = 21334110020078. Its totient is φ = 21334110020076.

The previous prime is 21334110020039. The next prime is 21334110020081. The reversal of 21334110020077 is 77002001143312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14861186910441 + 6472923109636 = 3855021^2 + 2544194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21334110020077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21334110620077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667055010038 + 10667055010039.

It is an arithmetic number, because the mean of its divisors is an integer number (10667055010039).

Almost surely, 2^{21334110020077} is an apocalyptic number.

It is an amenable number.

21334110020077 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334110020077 is an equidigital number, since it uses as much as digits as its factorization.

21334110020077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 21334110020077 its reverse (77002001143312), we get a palindrome (98336111163389).

The spelling of 21334110020077 in words is "twenty-one trillion, three hundred thirty-four billion, one hundred ten million, twenty thousand, seventy-seven".