33342221 has 8 divisors (see below), whose sum is σ = 36734688. Its totient is φ = 30010000.

The previous prime is 33342209. The next prime is 33342229. The reversal of 33342221 is 12224333.

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 33342221 - 2¹⁸ = 33080077 is a prime.

It is a super-2 number, since 2×33342221² = 2223407402425682, 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 = 33342193 and 33342202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33342229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13895 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (4591836).

Almost surely, 2^33342221 is an apocalyptic number.

It is an amenable number.

33342221 is a deficient number, since it is larger than the sum of its proper divisors (3392467).

33342221 is a wasteful number, since it uses less digits than its factorization.

33342221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30123.

The product of its digits is 864, while the sum is 20.

The square root of 33342221 is about 5774.2723351086. The cubic root of 33342221 is about 321.8583954862.

Adding to 33342221 its reverse (12224333), we get a palindrome (45566554).

It can be divided in two parts, 3334 and 2221, that added together give a palindrome (5555).

The spelling of 33342221 in words is "thirty-three million, three hundred forty-two thousand, two hundred twenty-one".