101320213212221 has 2 divisors, whose sum is σ = 101320213212222. Its totient is φ = 101320213212220.

The previous prime is 101320213212209. The next prime is 101320213212241. The reversal of 101320213212221 is 122212312023101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87017740588900 + 14302472623321 = 9328330^2 + 3781861^2 .

It is a cyclic number.

It is not a de Polignac number, because 101320213212221 - 2¹⁰ = 101320213211197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101320213212241) 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, 50660106606110 + 50660106606111.

It is an arithmetic number, because the mean of its divisors is an integer number (50660106606111).

Almost surely, 2^{101320213212221} is an apocalyptic number.

It is an amenable number.

101320213212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101320213212221 is an equidigital number, since it uses as much as digits as its factorization.

101320213212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 101320213212221 its reverse (122212312023101), we get a palindrome (223532525235322).

The spelling of 101320213212221 in words is "one hundred one trillion, three hundred twenty billion, two hundred thirteen million, two hundred twelve thousand, two hundred twenty-one".