21200101201105 has 16 divisors (see below), whose sum is σ = 25495207133760. Its totient is φ = 16923358907712.

The previous prime is 21200101201043. The next prime is 21200101201127. The reversal of 21200101201105 is 50110210100212.

It is a cyclic number.

It is not a de Polignac number, because 21200101201105 - 2⁷ = 21200101200977 is a prime.

It is a super-3 number, since 3×21200101201105³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131770051 + ... + 131930839.

It is an arithmetic number, because the mean of its divisors is an integer number (1593450445860).

Almost surely, 2^{21200101201105} is an apocalyptic number.

It is an amenable number.

21200101201105 is a deficient number, since it is larger than the sum of its proper divisors (4295105932655).

21200101201105 is a wasteful number, since it uses less digits than its factorization.

21200101201105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217728.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 21200101201105 its reverse (50110210100212), we get a palindrome (71310311301317).

The spelling of 21200101201105 in words is "twenty-one trillion, two hundred billion, one hundred one million, two hundred one thousand, one hundred five".