212201100999989 has 2 divisors, whose sum is σ = 212201100999990. Its totient is φ = 212201100999988.

The previous prime is 212201100999973. The next prime is 212201101000033. The reversal of 212201100999989 is 989999001102212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207020788439089 + 5180312560900 = 14388217^2 + 2276030^2 .

It is a cyclic number.

It is not a de Polignac number, because 212201100999989 - 2⁴ = 212201100999973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212261100999989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100550499994 + 106100550499995.

It is an arithmetic number, because the mean of its divisors is an integer number (106100550499995).

Almost surely, 2^{212201100999989} is an apocalyptic number.

It is an amenable number.

212201100999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201100999989 is an equidigital number, since it uses as much as digits as its factorization.

212201100999989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 62.

The spelling of 212201100999989 in words is "two hundred twelve trillion, two hundred one billion, one hundred million, nine hundred ninety-nine thousand, nine hundred eighty-nine".