212021100212 has 12 divisors (see below), whose sum is σ = 372015917280. Its totient is φ = 105730838136.

The previous prime is 212021100173. The next prime is 212021100253. The reversal of 212021100212 is 212001120212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69926288 + ... + 69929319.

It is an arithmetic number, because the mean of its divisors is an integer number (31001326440).

Almost surely, 2^212021100212 is an apocalyptic number.

It is an amenable number.

212021100212 is a deficient number, since it is larger than the sum of its proper divisors (159994817068).

212021100212 is a wasteful number, since it uses less digits than its factorization.

212021100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139855990 (or 139855988 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212021100212 its reverse (212001120212), we get a palindrome (424022220424).

The spelling of 212021100212 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, two hundred twelve".