21035504341001 has 2 divisors, whose sum is σ = 21035504341002. Its totient is φ = 21035504341000.

The previous prime is 21035504340989. The next prime is 21035504341009. The reversal of 21035504341001 is 10014340553012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16677618462976 + 4357885878025 = 4083824^2 + 2087555^2 .

It is a cyclic number.

It is not a de Polignac number, because 21035504341001 - 2²² = 21035500146697 is a prime.

It is not a weakly prime, because it can be changed into another prime (21035504341009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517752170500 + 10517752170501.

It is an arithmetic number, because the mean of its divisors is an integer number (10517752170501).

Almost surely, 2^{21035504341001} is an apocalyptic number.

It is an amenable number.

21035504341001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035504341001 is an equidigital number, since it uses as much as digits as its factorization.

21035504341001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 21035504341001 its reverse (10014340553012), we get a palindrome (31049844894013).

The spelling of 21035504341001 in words is "twenty-one trillion, thirty-five billion, five hundred four million, three hundred forty-one thousand, one".