10101112201221 has 16 divisors (see below), whose sum is σ = 13498866616320. Its totient is φ = 6718732804800.

The previous prime is 10101112201217. The next prime is 10101112201253. The reversal of 10101112201221 is 12210221110101.

It is a happy number.

It is not a de Polignac number, because 10101112201221 - 2² = 10101112201217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10101112201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101112201261) 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 in 15 ways as a sum of consecutive naturals, for example, 385191 + ... + 4511163.

It is an arithmetic number, because the mean of its divisors is an integer number (843679163520).

Almost surely, 2^{10101112201221} is an apocalyptic number.

It is an amenable number.

10101112201221 is a deficient number, since it is larger than the sum of its proper divisors (3397754415099).

10101112201221 is a wasteful number, since it uses less digits than its factorization.

10101112201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127836.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10101112201221 its reverse (12210221110101), we get a palindrome (22311333311322).

The spelling of 10101112201221 in words is "ten trillion, one hundred one billion, one hundred twelve million, two hundred one thousand, two hundred twenty-one".