221100022211 has 4 divisors (see below), whose sum is σ = 228232281024. Its totient is φ = 213967763400.

The previous prime is 221100022207. The next prime is 221100022219. The reversal of 221100022211 is 112220001122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221100022211 - 2² = 221100022207 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (221100022219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566129360 + ... + 3566129421.

It is an arithmetic number, because the mean of its divisors is an integer number (57058070256).

Almost surely, 2^221100022211 is an apocalyptic number.

221100022211 is a deficient number, since it is larger than the sum of its proper divisors (7132258813).

221100022211 is an equidigital number, since it uses as much as digits as its factorization.

221100022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132258812.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221100022211 its reverse (112220001122), we get a palindrome (333320023333).

The spelling of 221100022211 in words is "two hundred twenty-one billion, one hundred million, twenty-two thousand, two hundred eleven".