221102221010221 has 8 divisors (see below), whose sum is σ = 221451077602944. Its totient is φ = 220753386400560.

The previous prime is 221102221010129. The next prime is 221102221010239. The reversal of 221102221010221 is 122010122201122.

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-221102221010221 is a prime.

It is a super-2 number, since 2×221102221010221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102221010261) 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, 14694256 + ... + 25653958.

It is an arithmetic number, because the mean of its divisors is an integer number (27681384700368).

Almost surely, 2^{221102221010221} is an apocalyptic number.

It is an amenable number.

221102221010221 is a deficient number, since it is larger than the sum of its proper divisors (348856592723).

221102221010221 is a wasteful number, since it uses less digits than its factorization.

221102221010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991531.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221102221010221 its reverse (122010122201122), we get a palindrome (343112343211343).

The spelling of 221102221010221 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty-one million, ten thousand, two hundred twenty-one".