33180121 has 4 divisors (see below), whose sum is σ = 35732452. Its totient is φ = 30627792.

The previous prime is 33180113. The next prime is 33180127. The reversal of 33180121 is 12108133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 25401600 = 2789^2 + 5040^2 .

It is not a de Polignac number, because 33180121 - 2³ = 33180113 is a prime.

It is a super-2 number, since 2×33180121² = 2201840859149282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33180127) 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, 1276146 + ... + 1276171.

It is an arithmetic number, because the mean of its divisors is an integer number (8933113).

Almost surely, 2^33180121 is an apocalyptic number.

It is an amenable number.

33180121 is a deficient number, since it is larger than the sum of its proper divisors (2552331).

33180121 is a wasteful number, since it uses less digits than its factorization.

33180121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552330.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 33180121 is about 5760.2188326486. The cubic root of 33180121 is about 321.3359545316.

Adding to 33180121 its reverse (12108133), we get a palindrome (45288254).

The spelling of 33180121 in words is "thirty-three million, one hundred eighty thousand, one hundred twenty-one".