1221227 has 6 divisors (see below), whose sum is σ = 1420668. Its totient is φ = 1046724.

The previous prime is 1221223. The next prime is 1221239. The reversal of 1221227 is 7221221.

It is not a de Polignac number, because 1221227 - 2² = 1221223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12413 + ... + 12510.

It is an arithmetic number, because the mean of its divisors is an integer number (236778).

2^1221227 is an apocalyptic number.

1221227 is a deficient number, since it is larger than the sum of its proper divisors (199441).

1221227 is an equidigital number, since it uses as much as digits as its factorization.

1221227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24937 (or 24930 counting only the distinct ones).

The product of its digits is 112, while the sum is 17.

The square root of 1221227 is about 1105.0913989349. The cubic root of 1221227 is about 106.8887830337. Note that the first 3 decimals are identical.

Adding to 1221227 its reverse (7221221), we get a palindrome (8442448).

The spelling of 1221227 in words is "one million, two hundred twenty-one thousand, two hundred twenty-seven".