201121010002101 has 16 divisors (see below), whose sum is σ = 306632349878400. Its totient is φ = 114865451655168.

The previous prime is 201121010002091. The next prime is 201121010002123. The reversal of 201121010002101 is 101200010121102.

It is not a de Polignac number, because 201121010002101 - 2⁵ = 201121010002069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121010002151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2534949996 + ... + 2535029333.

It is an arithmetic number, because the mean of its divisors is an integer number (19164521867400).

Almost surely, 2^{201121010002101} is an apocalyptic number.

201121010002101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201121010002101 is a deficient number, since it is larger than the sum of its proper divisors (105511339876299).

201121010002101 is a wasteful number, since it uses less digits than its factorization.

201121010002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069981228.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201121010002101 its reverse (101200010121102), we get a palindrome (302321020123203).

The spelling of 201121010002101 in words is "two hundred one trillion, one hundred twenty-one billion, ten million, two thousand, one hundred one".