2102021110001 has 12 divisors (see below), whose sum is σ = 2186697812496. Its totient is φ = 2020143950880.

The previous prime is 2102021109989. The next prime is 2102021110141. The reversal of 2102021110001 is 1000111202012.

It is not a de Polignac number, because 2102021110001 - 2¹⁰ = 2102021108977 is a prime.

It is a super-2 number, since 2×2102021110001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102021110201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9219155 + ... + 9444408.

It is an arithmetic number, because the mean of its divisors is an integer number (182224817708).

Almost surely, 2^{2102021110001} is an apocalyptic number.

It is an amenable number.

2102021110001 is a deficient number, since it is larger than the sum of its proper divisors (84676702495).

2102021110001 is an equidigital number, since it uses as much as digits as its factorization.

2102021110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18663712 (or 18663671 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2102021110001 its reverse (1000111202012), we get a palindrome (3102132312013).

The spelling of 2102021110001 in words is "two trillion, one hundred two billion, twenty-one million, one hundred ten thousand, one".