1221027 has 8 divisors (see below), whose sum is σ = 1634064. Its totient is φ = 811008.

The previous prime is 1221019. The next prime is 1221029. The reversal of 1221027 is 7201221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221027 - 2³ = 1221019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220997 and 1221015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221029) 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, 483 + ... + 1635.

It is an arithmetic number, because the mean of its divisors is an integer number (204258).

2^1221027 is an apocalyptic number.

1221027 is a deficient number, since it is larger than the sum of its proper divisors (413037).

1221027 is a wasteful number, since it uses less digits than its factorization.

1221027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1221027 is about 1105.0009049770. Note that the first 3 decimals coincide. The cubic root of 1221027 is about 106.8829476665.

Adding to 1221027 its reverse (7201221), we get a palindrome (8422248).

The spelling of 1221027 in words is "one million, two hundred twenty-one thousand, twenty-seven".