221010132002221 has 8 divisors (see below), whose sum is σ = 221287746660120. Its totient is φ = 220732543891008.

The previous prime is 221010132002203. The next prime is 221010132002237. The reversal of 221010132002221 is 122200231010122.

221010132002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 62114274950121 + 158895857052100 = 7881261^2 + 12605390^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010132002221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010132002291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10050795 + ... + 23303191.

It is an arithmetic number, because the mean of its divisors is an integer number (27660968332515).

Almost surely, 2^{221010132002221} is an apocalyptic number.

It is an amenable number.

221010132002221 is a deficient number, since it is larger than the sum of its proper divisors (277614657899).

221010132002221 is a wasteful number, since it uses less digits than its factorization.

221010132002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13273343.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221010132002221 its reverse (122200231010122), we get a palindrome (343210363012343).

The spelling of 221010132002221 in words is "two hundred twenty-one trillion, ten billion, one hundred thirty-two million, two thousand, two hundred twenty-one".