212021121232 has 20 divisors (see below), whose sum is σ = 410830456036. Its totient is φ = 106000358400.

The previous prime is 212021121227. The next prime is 212021121269. The reversal of 212021121232 is 232121120212.

It can be written as a sum of positive squares in 2 ways, for example, as 127551836736 + 84469284496 = 357144^2 + 290636^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464769 + ... + 800032.

Almost surely, 2^212021121232 is an apocalyptic number.

It is an amenable number.

212021121232 is a deficient number, since it is larger than the sum of its proper divisors (198809334804).

212021121232 is a wasteful number, since it uses less digits than its factorization.

212021121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275286 (or 1275280 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212021121232 its reverse (232121120212), we get a palindrome (444142241444).

The spelling of 212021121232 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred thirty-two".