212201221201973 has 2 divisors, whose sum is σ = 212201221201974. Its totient is φ = 212201221201972.

The previous prime is 212201221201969. The next prime is 212201221202041. The reversal of 212201221201973 is 379102122102212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172608962153329 + 39592259048644 = 13138073^2 + 6292238^2 .

It is a cyclic number.

It is not a de Polignac number, because 212201221201973 - 2² = 212201221201969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212201224201973) 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, 106100610600986 + 106100610600987.

It is an arithmetic number, because the mean of its divisors is an integer number (106100610600987).

Almost surely, 2^{212201221201973} is an apocalyptic number.

It is an amenable number.

212201221201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201221201973 is an equidigital number, since it uses as much as digits as its factorization.

212201221201973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 212201221201973 in words is "two hundred twelve trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, nine hundred seventy-three".