21122102112071 has 2 divisors, whose sum is σ = 21122102112072. Its totient is φ = 21122102112070.

The previous prime is 21122102112011. The next prime is 21122102112073. The reversal of 21122102112071 is 17021120122112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122102112071 - 2¹⁴ = 21122102095687 is a prime.

It is a super-2 number, since 2×21122102112071² (a number of 27 digits) contains 22 as substring.

Together with 21122102112073, 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 (21122102112073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561051056035 + 10561051056036.

It is an arithmetic number, because the mean of its divisors is an integer number (10561051056036).

Almost surely, 2^{21122102112071} is an apocalyptic number.

21122102112071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122102112071 is an equidigital number, since it uses as much as digits as its factorization.

21122102112071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 21122102112071 its reverse (17021120122112), we get a palindrome (38143222234183).

The spelling of 21122102112071 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred two million, one hundred twelve thousand, seventy-one".