21200220112101 has 16 divisors (see below), whose sum is σ = 28721567807424. Its totient is φ = 13906657315584.

The previous prime is 21200220112091. The next prime is 21200220112171. The reversal of 21200220112101 is 10121102200212.

It is not a de Polignac number, because 21200220112101 - 2¹¹ = 21200220110053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200220112171) 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, 59956980 + ... + 60309533.

It is an arithmetic number, because the mean of its divisors is an integer number (1795097987964).

Almost surely, 2^{21200220112101} is an apocalyptic number.

It is an amenable number.

21200220112101 is a deficient number, since it is larger than the sum of its proper divisors (7521347695323).

21200220112101 is a wasteful number, since it uses less digits than its factorization.

21200220112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120267460.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21200220112101 its reverse (10121102200212), we get a palindrome (31321322312313).

The spelling of 21200220112101 in words is "twenty-one trillion, two hundred billion, two hundred twenty million, one hundred twelve thousand, one hundred one".