2021100212 has 12 divisors (see below), whose sum is σ = 3541640256. Its totient is φ = 1009203000.

The previous prime is 2021100197. The next prime is 2021100217. The reversal of 2021100212 is 2120011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021100193 and 2021100202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021100217) by changing a digit.

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, 333398 + ... + 339405.

It is an arithmetic number, because the mean of its divisors is an integer number (295136688).

Almost surely, 2^2021100212 is an apocalyptic number.

It is an amenable number.

2021100212 is a deficient number, since it is larger than the sum of its proper divisors (1520540044).

2021100212 is a wasteful number, since it uses less digits than its factorization.

2021100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673558 (or 673556 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2021100212 is about 44956.6481401806. The cubic root of 2021100212 is about 1264.3363257737.

Adding to 2021100212 its reverse (2120011202), we get a palindrome (4141111414).

The spelling of 2021100212 in words is "two billion, twenty-one million, one hundred thousand, two hundred twelve".