212122102211951 has 2 divisors, whose sum is σ = 212122102211952. Its totient is φ = 212122102211950.

The previous prime is 212122102211897. The next prime is 212122102212023. The reversal of 212122102211951 is 159112201221212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212122102211951 - 2²² = 212122098017647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212122102231951) 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, 106061051105975 + 106061051105976.

It is an arithmetic number, because the mean of its divisors is an integer number (106061051105976).

Almost surely, 2^{212122102211951} is an apocalyptic number.

212122102211951 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122102211951 is an equidigital number, since it uses as much as digits as its factorization.

212122102211951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 212122102211951 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred eleven thousand, nine hundred fifty-one".