2021001100103 has 16 divisors (see below), whose sum is σ = 2107354752000. Its totient is φ = 1935761329152.

The previous prime is 2021001100057. The next prime is 2021001100133. The reversal of 2021001100103 is 3010011001202.

It is a cyclic number.

It is not a de Polignac number, because 2021001100103 - 2²⁸ = 2020732664647 is a prime.

It is a super-2 number, since 2×2021001100103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021001100133) 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 15 ways as a sum of consecutive naturals, for example, 52901933 + ... + 52940121.

It is an arithmetic number, because the mean of its divisors is an integer number (131709672000).

Almost surely, 2^{2021001100103} is an apocalyptic number.

2021001100103 is a deficient number, since it is larger than the sum of its proper divisors (86353651897).

2021001100103 is a wasteful number, since it uses less digits than its factorization.

2021001100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52714.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 2021001100103 its reverse (3010011001202), we get a palindrome (5031012101305).

The spelling of 2021001100103 in words is "two trillion, twenty-one billion, one million, one hundred thousand, one hundred three".