21004314041 has 2 divisors, whose sum is σ = 21004314042. Its totient is φ = 21004314040.

The previous prime is 21004314029. The next prime is 21004314049. The reversal of 21004314041 is 14041340012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11876422441 + 9127891600 = 108979^2 + 95540^2 .

It is a cyclic number.

It is not a de Polignac number, because 21004314041 - 2¹⁰ = 21004313017 is a prime.

It is not a weakly prime, because it can be changed into another prime (21004314049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502157020 + 10502157021.

It is an arithmetic number, because the mean of its divisors is an integer number (10502157021).

Almost surely, 2^21004314041 is an apocalyptic number.

It is an amenable number.

21004314041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004314041 is an equidigital number, since it uses as much as digits as its factorization.

21004314041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21004314041 its reverse (14041340012), we get a palindrome (35045654053).

The spelling of 21004314041 in words is "twenty-one billion, four million, three hundred fourteen thousand, forty-one".