221122221210211 has 8 divisors (see below), whose sum is σ = 221749754230784. Its totient is φ = 220494824169480.

The previous prime is 221122221210197. The next prime is 221122221210271. The reversal of 221122221210211 is 112012122221122.

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 221122221210211 - 2¹⁹ = 221122220685923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122221210271) 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 7 ways as a sum of consecutive naturals, for example, 30737625 + ... + 37243066.

It is an arithmetic number, because the mean of its divisors is an integer number (27718719278848).

Almost surely, 2^{221122221210211} is an apocalyptic number.

221122221210211 is a deficient number, since it is larger than the sum of its proper divisors (627533020573).

221122221210211 is an equidigital number, since it uses as much as digits as its factorization.

221122221210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67989921.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221122221210211 its reverse (112012122221122), we get a palindrome (333134343431333).

The spelling of 221122221210211 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred ten thousand, two hundred eleven".