221021112201211 has 8 divisors (see below), whose sum is σ = 252597200940000. Its totient is φ = 189445434497088.

The previous prime is 221021112201187. The next prime is 221021112201251. The reversal of 221021112201211 is 112102211120122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221021112201211 - 2¹¹ = 221021112199163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221021112201251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101605546 + ... + 103758031.

It is an arithmetic number, because the mean of its divisors is an integer number (31574650117500).

Almost surely, 2^{221021112201211} is an apocalyptic number.

221021112201211 is a deficient number, since it is larger than the sum of its proper divisors (31576088738789).

221021112201211 is a wasteful number, since it uses less digits than its factorization.

221021112201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205517333.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221021112201211 its reverse (112102211120122), we get a palindrome (333123323321333).

The spelling of 221021112201211 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twelve million, two hundred one thousand, two hundred eleven".