33221402 has 8 divisors (see below), whose sum is σ = 49871700. Its totient is φ = 16597504.

The previous prime is 33221399. The next prime is 33221411. The reversal of 33221402 is 20412233.

It can be written as a sum of positive squares in 2 ways, for example, as 21242881 + 11978521 = 4609^2 + 3461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×33221402² = 2207323101691208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3077 + ... + 8712.

Almost surely, 2^33221402 is an apocalyptic number.

33221402 is a deficient number, since it is larger than the sum of its proper divisors (16650298).

33221402 is a wasteful number, since it uses less digits than its factorization.

33221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 33221402 is about 5763.8010028106. The cubic root of 33221402 is about 321.4691625258.

Adding to 33221402 its reverse (20412233), we get a palindrome (53633635).

The spelling of 33221402 in words is "thirty-three million, two hundred twenty-one thousand, four hundred two".