1337221 has 4 divisors (see below), whose sum is σ = 1340032. Its totient is φ = 1334412.

The previous prime is 1337209. The next prime is 1337227. The reversal of 1337221 is 1227331.

1337221 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1227331 = 7 ⋅175333.

It is a cyclic number.

It is not a de Polignac number, because 1337221 - 2⁷ = 1337093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1337227) 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, 495 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (335008).

2^1337221 is an apocalyptic number.

It is an amenable number.

1337221 is a deficient number, since it is larger than the sum of its proper divisors (2811).

1337221 is an equidigital number, since it uses as much as digits as its factorization.

1337221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810.

The product of its digits is 252, while the sum is 19.

The square root of 1337221 is about 1156.3827221124. The cubic root of 1337221 is about 110.1711110996.

The spelling of 1337221 in words is "one million, three hundred thirty-seven thousand, two hundred twenty-one".