101221201201 has 2 divisors, whose sum is σ = 101221201202. Its totient is φ = 101221201200.

The previous prime is 101221201177. The next prime is 101221201261. The reversal of 101221201201 is 102102122101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84476841201 + 16744360000 = 290649^2 + 129400^2 .

It is a cyclic number.

It is not a de Polignac number, because 101221201201 - 2⁷ = 101221201073 is a prime.

It is not a weakly prime, because it can be changed into another prime (101221201261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610600600 + 50610600601.

It is an arithmetic number, because the mean of its divisors is an integer number (50610600601).

Almost surely, 2^101221201201 is an apocalyptic number.

It is an amenable number.

101221201201 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221201201 is an equidigital number, since it uses as much as digits as its factorization.

101221201201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101221201201 its reverse (102102122101), we get a palindrome (203323323302).

The spelling of 101221201201 in words is "one hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred one".