21200011202101 has 8 divisors (see below), whose sum is σ = 21288407862744. Its totient is φ = 21111618094080.

The previous prime is 21200011202093. The next prime is 21200011202107. The reversal of 21200011202101 is 10120211000212.

It can be written as a sum of positive squares in 4 ways, for example, as 22067399601 + 21177943802500 = 148551^2 + 4601950^2 .

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 21200011202101 - 2³ = 21200011202093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200011202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11426775 + ... + 13151851.

It is an arithmetic number, because the mean of its divisors is an integer number (2661050982843).

Almost surely, 2^{21200011202101} is an apocalyptic number.

It is an amenable number.

21200011202101 is a deficient number, since it is larger than the sum of its proper divisors (88396660643).

21200011202101 is a wasteful number, since it uses less digits than its factorization.

21200011202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776311.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200011202101 its reverse (10120211000212), we get a palindrome (31320222202313).

The spelling of 21200011202101 in words is "twenty-one trillion, two hundred billion, eleven million, two hundred two thousand, one hundred one".