212021100999 has 12 divisors (see below), whose sum is σ = 314529801976. Its totient is φ = 137527200432.

The previous prime is 212021100937. The next prime is 212021101001. The reversal of 212021100999 is 999001120212.

212021100999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212021100999 - 2¹¹ = 212021098951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021100799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318349669 + ... + 318350334.

Almost surely, 2^212021100999 is an apocalyptic number.

212021100999 is a deficient number, since it is larger than the sum of its proper divisors (102508700977).

212021100999 is a wasteful number, since it uses less digits than its factorization.

212021100999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636700046 (or 636700043 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The spelling of 212021100999 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, nine hundred ninety-nine".