221211113200221 has 8 divisors (see below), whose sum is σ = 294955726877280. Its totient is φ = 147470287494992.

The previous prime is 221211113200193. The next prime is 221211113200223. The reversal of 221211113200221 is 122002311112122.

221211113200221 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 221211113200221 - 2¹⁸ = 221211112938077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211113200223) 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, 946856691 + ... + 947090288.

It is an arithmetic number, because the mean of its divisors is an integer number (36869465859660).

Almost surely, 2^{221211113200221} is an apocalyptic number.

It is an amenable number.

221211113200221 is a deficient number, since it is larger than the sum of its proper divisors (73744613677059).

221211113200221 is a wasteful number, since it uses less digits than its factorization.

221211113200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893985915.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 221211113200221 its reverse (122002311112122), we get a palindrome (343213424312343).

The spelling of 221211113200221 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred thirteen million, two hundred thousand, two hundred twenty-one".