33212023021 has 8 divisors (see below), whose sum is σ = 35227484280. Its totient is φ = 31203429888.

The previous prime is 33212022997. The next prime is 33212023043. The reversal of 33212023021 is 12032021233.

It can be written as a sum of positive squares in 4 ways, for example, as 6073084900 + 27138938121 = 77930^2 + 164739^2 .

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 33212023021 - 2²¹ = 33209925869 is a prime.

It is a super-2 number, since 2×33212023021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33212023021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33212023121) 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, 1707066 + ... + 1726411.

It is an arithmetic number, because the mean of its divisors is an integer number (4403435535).

Almost surely, 2^33212023021 is an apocalyptic number.

It is an amenable number.

33212023021 is a deficient number, since it is larger than the sum of its proper divisors (2015461259).

33212023021 is a wasteful number, since it uses less digits than its factorization.

33212023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434063.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 33212023021 its reverse (12032021233), we get a palindrome (45244044254).

The spelling of 33212023021 in words is "thirty-three billion, two hundred twelve million, twenty-three thousand, twenty-one".