221210240330221 has 8 divisors (see below), whose sum is σ = 224512594539264. Its totient is φ = 217907906969280.

The previous prime is 221210240330197. The next prime is 221210240330227. The reversal of 221210240330221 is 122033042012122.

221210240330221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221210240330221 - 2⁹ = 221210240329709 is a prime.

It is a super-3 number, since 3×221210240330221³ (a number of 44 digits) contains 333 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 (221210240330227) 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, 16860036 + ... + 26957026.

It is an arithmetic number, because the mean of its divisors is an integer number (28064074317408).

Almost surely, 2^{221210240330221} is an apocalyptic number.

It is an amenable number.

221210240330221 is a deficient number, since it is larger than the sum of its proper divisors (3302354209043).

221210240330221 is a wasteful number, since it uses less digits than its factorization.

221210240330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10424051.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221210240330221 its reverse (122033042012122), we get a palindrome (343243282342343).

The spelling of 221210240330221 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred forty million, three hundred thirty thousand, two hundred twenty-one".