332513221 has 4 divisors (see below), whose sum is σ = 332668000. Its totient is φ = 332358444.

The previous prime is 332513219. The next prime is 332513261. The reversal of 332513221 is 122315233.

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: 122315233 = 449 ⋅272417.

It is a cyclic number.

It is not a de Polignac number, because 332513221 - 2¹ = 332513219 is a prime.

It is a super-2 number, since 2×332513221² = 221130084279589682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 332513192 and 332513201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332513261) 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, 74121 + ... + 78478.

It is an arithmetic number, because the mean of its divisors is an integer number (83167000).

Almost surely, 2^332513221 is an apocalyptic number.

It is an amenable number.

332513221 is a deficient number, since it is larger than the sum of its proper divisors (154779).

332513221 is a wasteful number, since it uses less digits than its factorization.

332513221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154778.

The product of its digits is 1080, while the sum is 22.

The square root of 332513221 is about 18234.9450506438. The cubic root of 332513221 is about 692.7921732357.

Adding to 332513221 its reverse (122315233), we get a palindrome (454828454).

The spelling of 332513221 in words is "three hundred thirty-two million, five hundred thirteen thousand, two hundred twenty-one".