221200110121 has 8 divisors (see below), whose sum is σ = 233586132320. Its totient is φ = 208888479072.

The previous prime is 221200110073. The next prime is 221200110149. The reversal of 221200110121 is 121011002122.

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 221200110121 - 2²¹ = 221198012969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200110821) 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, 18591675 + ... + 18603568.

It is an arithmetic number, because the mean of its divisors is an integer number (29198266540).

Almost surely, 2^221200110121 is an apocalyptic number.

It is an amenable number.

221200110121 is a deficient number, since it is larger than the sum of its proper divisors (12386022199).

221200110121 is a wasteful number, since it uses less digits than its factorization.

221200110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37195575.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221200110121 its reverse (121011002122), we get a palindrome (342211112243).

The spelling of 221200110121 in words is "two hundred twenty-one billion, two hundred million, one hundred ten thousand, one hundred twenty-one".