2021100101 has 8 divisors (see below), whose sum is σ = 2027642880. Its totient is φ = 2014567632.

The previous prime is 2021100089. The next prime is 2021100121. The reversal of 2021100101 is 1010011202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021100101 - 2¹⁴ = 2021083717 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 (2021100121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590471 + ... + 593883.

It is an arithmetic number, because the mean of its divisors is an integer number (253455360).

Almost surely, 2^2021100101 is an apocalyptic number.

It is an amenable number.

2021100101 is a deficient number, since it is larger than the sum of its proper divisors (6542779).

2021100101 is a wasteful number, since it uses less digits than its factorization.

2021100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155.

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

The square root of 2021100101 is about 44956.6469056579. The cubic root of 2021100101 is about 1264.3363026276.

Adding to 2021100101 its reverse (1010011202), we get a palindrome (3031111303).

The spelling of 2021100101 in words is "two billion, twenty-one million, one hundred thousand, one hundred one".