213243332101 has 2 divisors, whose sum is σ = 213243332102. Its totient is φ = 213243332100.

The previous prime is 213243332077. The next prime is 213243332117. The reversal of 213243332101 is 101233342312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120096902500 + 93146429601 = 346550^2 + 305199^2 .

It is a cyclic number.

It is not a de Polignac number, because 213243332101 - 2¹⁵ = 213243299333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213243332161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106621666050 + 106621666051.

It is an arithmetic number, because the mean of its divisors is an integer number (106621666051).

Almost surely, 2^213243332101 is an apocalyptic number.

It is an amenable number.

213243332101 is a deficient number, since it is larger than the sum of its proper divisors (1).

213243332101 is an equidigital number, since it uses as much as digits as its factorization.

213243332101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213243332101 its reverse (101233342312), we get a palindrome (314476674413).

The spelling of 213243332101 in words is "two hundred thirteen billion, two hundred forty-three million, three hundred thirty-two thousand, one hundred one".