1102221 has 8 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 734796.

The previous prime is 1102201. The next prime is 1102237. The reversal of 1102221 is 1222011.

It is not a de Polignac number, because 1102221 - 2¹³ = 1094029 is a prime.

It is a super-2 number, since 2×1102221² = 2429782265682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

1102221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102201) 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, 20385 + ... + 20438.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2^1102221 is an apocalyptic number.

It is an amenable number.

1102221 is a deficient number, since it is larger than the sum of its proper divisors (530739).

1102221 is an equidigital number, since it uses as much as digits as its factorization.

1102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40832 (or 40826 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1102221 is about 1049.8671344508. The cubic root of 1102221 is about 103.2974404187.

Adding to 1102221 its reverse (1222011), we get a palindrome (2324232).

The spelling of 1102221 in words is "one million, one hundred two thousand, two hundred twenty-one".