212234223077 has 2 divisors, whose sum is σ = 212234223078. Its totient is φ = 212234223076.

The previous prime is 212234222989. The next prime is 212234223079. The reversal of 212234223077 is 770322432212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194543627041 + 17690596036 = 441071^2 + 133006^2 .

It is a cyclic number.

It is not a de Polignac number, because 212234223077 - 2¹² = 212234218981 is a prime.

Together with 212234223079, 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 (212234223079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106117111538 + 106117111539.

It is an arithmetic number, because the mean of its divisors is an integer number (106117111539).

Almost surely, 2^212234223077 is an apocalyptic number.

It is an amenable number.

212234223077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212234223077 is an equidigital number, since it uses as much as digits as its factorization.

212234223077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 35.

Adding to 212234223077 its reverse (770322432212), we get a palindrome (982556655289).

The spelling of 212234223077 in words is "two hundred twelve billion, two hundred thirty-four million, two hundred twenty-three thousand, seventy-seven".