332001221 has 4 divisors (see below), whose sum is σ = 335424012. Its totient is φ = 328578432.

The previous prime is 332001203. The next prime is 332001233. The reversal of 332001221 is 122100233.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173870596 + 158130625 = 13186^2 + 12575^2 .

It is a cyclic number.

It is not a de Polignac number, because 332001221 - 2¹⁰ = 332000197 is a prime.

It is a super-2 number, since 2×332001221² = 220449621490981682, which contains 22 as substring.

It is a Duffinian number.

332001221 is a modest number, since divided by 1221 gives 332 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 332001196 and 332001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332001121) 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, 1711250 + ... + 1711443.

It is an arithmetic number, because the mean of its divisors is an integer number (83856003).

Almost surely, 2^332001221 is an apocalyptic number.

It is an amenable number.

332001221 is a deficient number, since it is larger than the sum of its proper divisors (3422791).

332001221 is an equidigital number, since it uses as much as digits as its factorization.

332001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422790.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 332001221 is about 18220.9006637982. The cubic root of 332001221 is about 692.4364061209.

Adding to 332001221 its reverse (122100233), we get a palindrome (454101454).

The spelling of 332001221 in words is "three hundred thirty-two million, one thousand, two hundred twenty-one".