221120110221 has 8 divisors (see below), whose sum is σ = 294839155104. Its totient is φ = 147407236080.

The previous prime is 221120110199. The next prime is 221120110243. The reversal of 221120110221 is 122011021122.

It is an interprime number because it is at equal distance from previous prime (221120110199) and next prime (221120110243).

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

It is not a de Polignac number, because 221120110221 - 2¹⁸ = 221119848077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221120110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120111221) 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, 1458415 + ... + 1602876.

It is an arithmetic number, because the mean of its divisors is an integer number (36854894388).

Almost surely, 2^221120110221 is an apocalyptic number.

It is an amenable number.

221120110221 is a deficient number, since it is larger than the sum of its proper divisors (73719044883).

221120110221 is a wasteful number, since it uses less digits than its factorization.

221120110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085371.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221120110221 its reverse (122011021122), we get a palindrome (343131131343).

The spelling of 221120110221 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, two hundred twenty-one".