212411324282021 has 2 divisors, whose sum is σ = 212411324282022. Its totient is φ = 212411324282020.

The previous prime is 212411324281939. The next prime is 212411324282023. The reversal of 212411324282021 is 120282423114212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150383964976996 + 62027359305025 = 12263114^2 + 7875745^2 .

It is a cyclic number.

It is not a de Polignac number, because 212411324282021 - 2³⁰ = 212410250540197 is a prime.

It is a super-2 number, since 2×212411324282021² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 212411324282023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212411324282023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106205662141010 + 106205662141011.

It is an arithmetic number, because the mean of its divisors is an integer number (106205662141011).

Almost surely, 2^{212411324282021} is an apocalyptic number.

It is an amenable number.

212411324282021 is a deficient number, since it is larger than the sum of its proper divisors (1).

212411324282021 is an equidigital number, since it uses as much as digits as its factorization.

212411324282021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 35.

Adding to 212411324282021 its reverse (120282423114212), we get a palindrome (332693747396233).

The spelling of 212411324282021 in words is "two hundred twelve trillion, four hundred eleven billion, three hundred twenty-four million, two hundred eighty-two thousand, twenty-one".