212021007127 has 2 divisors, whose sum is σ = 212021007128. Its totient is φ = 212021007126.

The previous prime is 212021007097. The next prime is 212021007131. The reversal of 212021007127 is 721700120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021007127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021007197) 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, 106010503563 + 106010503564.

It is an arithmetic number, because the mean of its divisors is an integer number (106010503564).

Almost surely, 2^212021007127 is an apocalyptic number.

212021007127 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021007127 is an equidigital number, since it uses as much as digits as its factorization.

212021007127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 212021007127 its reverse (721700120212), we get a palindrome (933721127339).

The spelling of 212021007127 in words is "two hundred twelve billion, twenty-one million, seven thousand, one hundred twenty-seven".