21411312111071 has 2 divisors, whose sum is σ = 21411312111072. Its totient is φ = 21411312111070.

The previous prime is 21411312111023. The next prime is 21411312111109. The reversal of 21411312111071 is 17011121311412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21411312111071 - 2¹⁴ = 21411312094687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21411312111071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21411312111011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705656055535 + 10705656055536.

It is an arithmetic number, because the mean of its divisors is an integer number (10705656055536).

Almost surely, 2^{21411312111071} is an apocalyptic number.

21411312111071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21411312111071 is an equidigital number, since it uses as much as digits as its factorization.

21411312111071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 21411312111071 its reverse (17011121311412), we get a palindrome (38422433422483).

The spelling of 21411312111071 in words is "twenty-one trillion, four hundred eleven billion, three hundred twelve million, one hundred eleven thousand, seventy-one".