33221985 has 16 divisors (see below), whose sum is σ = 53497536. Its totient is φ = 17604288.

The previous prime is 33221983. The next prime is 33221999. The reversal of 33221985 is 58912233.

It is not a de Polignac number, because 33221985 - 2¹ = 33221983 is a prime.

It is a super-2 number, since 2×33221985² = 2207400574680450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33221983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699 + ... + 9408.

It is an arithmetic number, because the mean of its divisors is an integer number (3343596).

Almost surely, 2^33221985 is an apocalyptic number.

It is an amenable number.

33221985 is a deficient number, since it is larger than the sum of its proper divisors (20275551).

33221985 is a wasteful number, since it uses less digits than its factorization.

33221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14272.

The product of its digits is 12960, while the sum is 33.

The square root of 33221985 is about 5763.8515768538. The cubic root of 33221985 is about 321.4710429945.

The spelling of 33221985 in words is "thirty-three million, two hundred twenty-one thousand, nine hundred eighty-five".