221110200220221 has 128 divisors (see below), whose sum is σ = 374407778304000. Its totient is φ = 127843799212800.

The previous prime is 221110200220219. The next prime is 221110200220223. The reversal of 221110200220221 is 122022002011122.

It is a happy number.

221110200220221 is a `hidden beast` number, since 2 + 2 + 11 + 10 + 200 + 220 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (221110200220219) and next prime (221110200220223).

It is not a de Polignac number, because 221110200220221 - 2¹ = 221110200220219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221110200220194 and 221110200220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110200220223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 421358635 + ... + 421883063.

It is an arithmetic number, because the mean of its divisors is an integer number (2925060768000).

Almost surely, 2^{221110200220221} is an apocalyptic number.

It is an amenable number.

221110200220221 is a deficient number, since it is larger than the sum of its proper divisors (153297578083779).

221110200220221 is a wasteful number, since it uses less digits than its factorization.

221110200220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524992 (or 524986 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221110200220221 its reverse (122022002011122), we get a palindrome (343132202231343).

The spelling of 221110200220221 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".