10001120020001 has 8 divisors (see below), whose sum is σ = 10910338061664. Its totient is φ = 9091906197120.

The previous prime is 10001120019977. The next prime is 10001120020013. The reversal of 10001120020001 is 10002002110001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001120020001 - 2¹⁰ = 10001120018977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001120020051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5890586 + ... + 7396028.

It is an arithmetic number, because the mean of its divisors is an integer number (1363792257708).

Almost surely, 2^{10001120020001} is an apocalyptic number.

10001120020001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001120020001 is a deficient number, since it is larger than the sum of its proper divisors (909218041663).

10001120020001 is a wasteful number, since it uses less digits than its factorization.

10001120020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109391.

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

Adding to 10001120020001 its reverse (10002002110001), we get a palindrome (20003122130002).

Subtracting 10001120020001 from its reverse (10002002110001), we obtain a square (882090000 = 29700²).

The spelling of 10001120020001 in words is "ten trillion, one billion, one hundred twenty million, twenty thousand, one".