212230024392821 has 2 divisors, whose sum is σ = 212230024392822. Its totient is φ = 212230024392820.

The previous prime is 212230024392797. The next prime is 212230024392823. The reversal of 212230024392821 is 128293420032212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131271671038225 + 80958353354596 = 11457385^2 + 8997686^2 .

It is a cyclic number.

It is not a de Polignac number, because 212230024392821 - 2²² = 212230020198517 is a prime.

Together with 212230024392823, 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 (212230024392823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115012196410 + 106115012196411.

It is an arithmetic number, because the mean of its divisors is an integer number (106115012196411).

Almost surely, 2^{212230024392821} is an apocalyptic number.

It is an amenable number.

212230024392821 is a deficient number, since it is larger than the sum of its proper divisors (1).

212230024392821 is an equidigital number, since it uses as much as digits as its factorization.

212230024392821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 212230024392821 in words is "two hundred twelve trillion, two hundred thirty billion, twenty-four million, three hundred ninety-two thousand, eight hundred twenty-one".