33222421 has 8 divisors (see below), whose sum is σ = 34366464. Its totient is φ = 32082960.

The previous prime is 33222407. The next prime is 33222433. The reversal of 33222421 is 12422233.

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 33222421 - 2¹³ = 33214229 is a prime.

It is a super-2 number, since 2×33222421² = 2207458514202482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33222121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20196 + ... + 21778.

It is an arithmetic number, because the mean of its divisors is an integer number (4295808).

Almost surely, 2^33222421 is an apocalyptic number.

33222421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33222421 is a deficient number, since it is larger than the sum of its proper divisors (1144043).

33222421 is a wasteful number, since it uses less digits than its factorization.

33222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its digits is 576, while the sum is 19.

The square root of 33222421 is about 5763.8893986613. The cubic root of 33222421 is about 321.4724492998.

Adding to 33222421 its reverse (12422233), we get a palindrome (45644654).

The spelling of 33222421 in words is "thirty-three million, two hundred twenty-two thousand, four hundred twenty-one".