2021100242 has 24 divisors (see below), whose sum is σ = 3580138368. Its totient is φ = 838238760.

The previous prime is 2021100241. The next prime is 2021100253. The reversal of 2021100242 is 2420011202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (2021100241) 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 11 ways as a sum of consecutive naturals, for example, 61658 + ... + 88565.

It is an arithmetic number, because the mean of its divisors is an integer number (149172432).

Almost surely, 2^2021100242 is an apocalyptic number.

2021100242 is a deficient number, since it is larger than the sum of its proper divisors (1559038126).

2021100242 is a wasteful number, since it uses less digits than its factorization.

2021100242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150294 (or 150263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2021100242 is about 44956.6484738353. The cubic root of 2021100242 is about 1264.3363320293.

Adding to 2021100242 its reverse (2420011202), we get a palindrome (4441111444).

The spelling of 2021100242 in words is "two billion, twenty-one million, one hundred thousand, two hundred forty-two".