220110111022221 has 24 divisors (see below), whose sum is σ = 363414261352064. Its totient is φ = 125757168282720.

The previous prime is 220110111022213. The next prime is 220110111022261. The reversal of 220110111022221 is 122220111011022.

220110111022221 is a `hidden beast` number, since 220 + 110 + 1 + 110 + 2 + 2 + 221 = 666.

It is not a de Polignac number, because 220110111022221 - 2³ = 220110111022213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220110111022194 and 220110111022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220110111022261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277907185 + ... + 278698086.

Almost surely, 2^{220110111022221} is an apocalyptic number.

220110111022221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220110111022221 is a deficient number, since it is larger than the sum of its proper divisors (143304150329843).

220110111022221 is a wasteful number, since it uses less digits than its factorization.

220110111022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556611561 (or 556611558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220110111022221 its reverse (122220111011022), we get a palindrome (342330222033243).

The spelling of 220110111022221 in words is "two hundred twenty trillion, one hundred ten billion, one hundred eleven million, twenty-two thousand, two hundred twenty-one".