373221 has 16 divisors (see below), whose sum is σ = 577920. Its totient is φ = 237600.

The previous prime is 373213. The next prime is 373229. The reversal of 373221 is 122373.

It is an interprime number because it is at equal distance from previous prime (373213) and next prime (373229).

It is not a de Polignac number, because 373221 - 2³ = 373213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 373194 and 373203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 321 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (36120).

373221 is a Friedman number, since it can be written as 72^3-(2+1)^3, using all its digits and the basic arithmetic operations.

2³⁷³²²¹ is an apocalyptic number.

It is an amenable number.

373221 is a deficient number, since it is larger than the sum of its proper divisors (204699).

373221 is a wasteful number, since it uses less digits than its factorization.

373221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 627 counting only the distinct ones).

The product of its digits is 252, while the sum is 18.

The square root of 373221 is about 610.9181614586. The cubic root of 373221 is about 71.9982638470.

Adding to 373221 its reverse (122373), we get a palindrome (495594).

The spelling of 373221 in words is "three hundred seventy-three thousand, two hundred twenty-one", and thus it is an iban number.