21222231200209 has 16 divisors (see below), whose sum is σ = 23379947942400. Its totient is φ = 19140940054080.

The previous prime is 21222231200153. The next prime is 21222231200263. The reversal of 21222231200209 is 90200213222212.

It is not a de Polignac number, because 21222231200209 - 2¹⁵ = 21222231167441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222231200299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28627002 + ... + 29358979.

It is an arithmetic number, because the mean of its divisors is an integer number (1461246746400).

Almost surely, 2^{21222231200209} is an apocalyptic number.

It is an amenable number.

21222231200209 is a deficient number, since it is larger than the sum of its proper divisors (2157716742191).

21222231200209 is a wasteful number, since it uses less digits than its factorization.

21222231200209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57986640.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 21222231200209 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirty-one million, two hundred thousand, two hundred nine".