101201221201221 has 16 divisors (see below), whose sum is σ = 151412168137920. Its totient is φ = 66799485939600.

The previous prime is 101201221201207. The next prime is 101201221201247. The reversal of 101201221201221 is 122102122102101.

101201221201221 is a `hidden beast` number, since 1 + 0 + 1 + 20 + 1 + 221 + 201 + 221 = 666.

It is not a de Polignac number, because 101201221201221 - 2¹¹ = 101201221199173 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101201221201194 and 101201221201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201221201271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18555410035 + ... + 18555415488.

It is an arithmetic number, because the mean of its divisors is an integer number (9463260508620).

Almost surely, 2^{101201221201221} is an apocalyptic number.

It is an amenable number.

101201221201221 is a deficient number, since it is larger than the sum of its proper divisors (50210946936699).

101201221201221 is a wasteful number, since it uses less digits than its factorization.

101201221201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37110825633 (or 37110825627 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 101201221201221 its reverse (122102122102101), we get a palindrome (223303343303322).

The spelling of 101201221201221 in words is "one hundred one trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-one".