213201219997 has 2 divisors, whose sum is σ = 213201219998. Its totient is φ = 213201219996.

The previous prime is 213201219989. The next prime is 213201220007. The reversal of 213201219997 is 799912102312.

213201219997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190184082201 + 23017137796 = 436101^2 + 151714^2 .

It is a cyclic number.

It is not a de Polignac number, because 213201219997 - 2³ = 213201219989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213201219967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106600609998 + 106600609999.

It is an arithmetic number, because the mean of its divisors is an integer number (106600609999).

Almost surely, 2^213201219997 is an apocalyptic number.

It is an amenable number.

213201219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

213201219997 is an equidigital number, since it uses as much as digits as its factorization.

213201219997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 213201219997 in words is "two hundred thirteen billion, two hundred one million, two hundred nineteen thousand, nine hundred ninety-seven".