21041476171 has 2 divisors, whose sum is σ = 21041476172. Its totient is φ = 21041476170.

The previous prime is 21041476153. The next prime is 21041476237. The reversal of 21041476171 is 17167414012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21041476171 - 2⁹ = 21041475659 is a prime.

It is not a weakly prime, because it can be changed into another prime (21041476271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10520738085 + 10520738086.

It is an arithmetic number, because the mean of its divisors is an integer number (10520738086).

Almost surely, 2^21041476171 is an apocalyptic number.

21041476171 is a deficient number, since it is larger than the sum of its proper divisors (1).

21041476171 is an equidigital number, since it uses as much as digits as its factorization.

21041476171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 21041476171 in words is "twenty-one billion, forty-one million, four hundred seventy-six thousand, one hundred seventy-one".