20110100020001 has 4 divisors (see below), whose sum is σ = 20758812923904. Its totient is φ = 19461387116100.

The previous prime is 20110100019991. The next prime is 20110100020007. The reversal of 20110100020001 is 10002000101102.

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 a cyclic number.

It is not a de Polignac number, because 20110100020001 - 2¹⁰ = 20110100018977 is a prime.

It is a super-2 number, since 2×20110100020001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20110100020007) 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, 324356451905 + ... + 324356451966.

It is an arithmetic number, because the mean of its divisors is an integer number (5189703230976).

Almost surely, 2^{20110100020001} is an apocalyptic number.

It is an amenable number.

20110100020001 is a deficient number, since it is larger than the sum of its proper divisors (648712903903).

20110100020001 is an equidigital number, since it uses as much as digits as its factorization.

20110100020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648712903902.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20110100020001 its reverse (10002000101102), we get a palindrome (30112100121103).

The spelling of 20110100020001 in words is "twenty trillion, one hundred ten billion, one hundred million, twenty thousand, one".