2021100022101 has 4 divisors (see below), whose sum is σ = 2694800029472. Its totient is φ = 1347400014732.

The previous prime is 2021100022079. The next prime is 2021100022141. The reversal of 2021100022101 is 1012200011202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2021100022101 - 2¹⁰ = 2021100021077 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 (2021100022141) 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, 336850003681 + ... + 336850003686.

It is an arithmetic number, because the mean of its divisors is an integer number (673700007368).

Almost surely, 2^{2021100022101} is an apocalyptic number.

It is an amenable number.

2021100022101 is a deficient number, since it is larger than the sum of its proper divisors (673700007371).

2021100022101 is an equidigital number, since it uses as much as digits as its factorization.

2021100022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673700007370.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2021100022101 its reverse (1012200011202), we get a palindrome (3033300033303).

The spelling of 2021100022101 in words is "two trillion, twenty-one billion, one hundred million, twenty-two thousand, one hundred one".