2021100434011 has 4 divisors (see below), whose sum is σ = 2023103507800. Its totient is φ = 2019097360224.

The previous prime is 2021100433967. The next prime is 2021100434047. The reversal of 2021100434011 is 1104340011202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021100434011 - 2⁷ = 2021100433883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021100434011.

It is not an unprimeable number, because it can be changed into a prime (2021100234011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001535381 + ... + 1001537398.

It is an arithmetic number, because the mean of its divisors is an integer number (505775876950).

Almost surely, 2^{2021100434011} is an apocalyptic number.

2021100434011 is a deficient number, since it is larger than the sum of its proper divisors (2003073789).

2021100434011 is a wasteful number, since it uses less digits than its factorization.

2021100434011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003073788.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2021100434011 its reverse (1104340011202), we get a palindrome (3125440445213).

The spelling of 2021100434011 in words is "two trillion, twenty-one billion, one hundred million, four hundred thirty-four thousand, eleven".