2021100011 has 6 divisors (see below), whose sum is σ = 2351075580. Its totient is φ = 1732371396.

The previous prime is 2021099989. The next prime is 2021100019. The reversal of 2021100011 is 1100011202.

It is not a de Polignac number, because 2021100011 - 2¹⁴ = 2021083627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021100019) 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 5 ways as a sum of consecutive naturals, for example, 20623421 + ... + 20623518.

It is an arithmetic number, because the mean of its divisors is an integer number (391845930).

Almost surely, 2^2021100011 is an apocalyptic number.

2021100011 is a deficient number, since it is larger than the sum of its proper divisors (329975569).

2021100011 is an equidigital number, since it uses as much as digits as its factorization.

2021100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41246953 (or 41246946 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2021100011 is about 44956.6459046936. The cubic root of 2021100011 is about 1264.3362838606.

Adding to 2021100011 its reverse (1100011202), we get a palindrome (3121111213).

It can be divided in two parts, 202 and 1100011, that multiplied together give a palindrome (222202222).

The spelling of 2021100011 in words is "two billion, twenty-one million, one hundred thousand, eleven".