21410211071 has 2 divisors, whose sum is σ = 21410211072. Its totient is φ = 21410211070.

The previous prime is 21410211019. The next prime is 21410211073. The reversal of 21410211071 is 17011201412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21410211071 - 2²² = 21406016767 is a prime.

Together with 21410211073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21410211073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705105535 + 10705105536.

It is an arithmetic number, because the mean of its divisors is an integer number (10705105536).

Almost surely, 2^21410211071 is an apocalyptic number.

21410211071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21410211071 is an equidigital number, since it uses as much as digits as its factorization.

21410211071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 21410211071 its reverse (17011201412), we get a palindrome (38421412483).

The spelling of 21410211071 in words is "twenty-one billion, four hundred ten million, two hundred eleven thousand, seventy-one".