1221335 has 8 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 943264.

The previous prime is 1221299. The next prime is 1221373. The reversal of 1221335 is 5331221.

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

It is a cyclic number.

It is not a de Polignac number, because 1221335 - 2⁸ = 1221079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4067 + ... + 4356.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2^1221335 is an apocalyptic number.

1221335 is a deficient number, since it is larger than the sum of its proper divisors (294985).

1221335 is an equidigital number, since it uses as much as digits as its factorization.

1221335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457.

The product of its digits is 180, while the sum is 17.

The square root of 1221335 is about 1105.1402625911. The cubic root of 1221335 is about 106.8919338670.

Adding to 1221335 its reverse (5331221), we get a palindrome (6552556).

The spelling of 1221335 in words is "one million, two hundred twenty-one thousand, three hundred thirty-five".