221120222021211 has 32 divisors (see below), whose sum is σ = 320461394329600. Its totient is φ = 135105111332640.

The previous prime is 221120222021207. The next prime is 221120222021261. The reversal of 221120222021211 is 112120222021122.

It is not a de Polignac number, because 221120222021211 - 2² = 221120222021207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120222021261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15390631 + ... + 26059776.

It is an arithmetic number, because the mean of its divisors is an integer number (10014418572800).

Almost surely, 2^{221120222021211} is an apocalyptic number.

221120222021211 is a deficient number, since it is larger than the sum of its proper divisors (99341172308389).

221120222021211 is a wasteful number, since it uses less digits than its factorization.

221120222021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41453479.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221120222021211 its reverse (112120222021122), we get a palindrome (333240444042333).

The spelling of 221120222021211 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, twenty-one thousand, two hundred eleven".