1106220221 has 4 divisors (see below), whose sum is σ = 1133201244. Its totient is φ = 1079239200.

The previous prime is 1106220217. The next prime is 1106220229. The reversal of 1106220221 is 1220226011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65448100 + 1040772121 = 8090^2 + 32261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1106220221 - 2² = 1106220217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1106220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106220229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13490450 + ... + 13490531.

It is an arithmetic number, because the mean of its divisors is an integer number (283300311).

Almost surely, 2^1106220221 is an apocalyptic number.

It is an amenable number.

1106220221 is a deficient number, since it is larger than the sum of its proper divisors (26981023).

1106220221 is an equidigital number, since it uses as much as digits as its factorization.

1106220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26981022.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1106220221 is about 33259.8890707711. The cubic root of 1106220221 is about 1034.2222200835. Note that the first 5 decimals are identical.

Adding to 1106220221 its reverse (1220226011), we get a palindrome (2326446232).

The spelling of 1106220221 in words is "one billion, one hundred six million, two hundred twenty thousand, two hundred twenty-one".