212121033232 has 10 divisors (see below), whose sum is σ = 410984501918. Its totient is φ = 106060516608.

The previous prime is 212121033203. The next prime is 212121033239. The reversal of 212121033232 is 232330121212.

It can be written as a sum of positive squares in only one way, i.e., 131655768336 + 80465264896 = 362844^2 + 283664^2 .

It is a super-3 number, since 3×212121033232³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (212121033239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628782273 + ... + 6628782304.

Almost surely, 2^212121033232 is an apocalyptic number.

It is an amenable number.

212121033232 is a deficient number, since it is larger than the sum of its proper divisors (198863468686).

212121033232 is a wasteful number, since it uses less digits than its factorization.

212121033232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257564585 (or 13257564579 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212121033232 its reverse (232330121212), we get a palindrome (444451154444).

The spelling of 212121033232 in words is "two hundred twelve billion, one hundred twenty-one million, thirty-three thousand, two hundred thirty-two".