100221201111 has 16 divisors (see below), whose sum is σ = 134026830080. Its totient is φ = 66615143040.

The previous prime is 100221201097. The next prime is 100221201137. The reversal of 100221201111 is 111102122001.

It is not a de Polignac number, because 100221201111 - 2¹³ = 100221192919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221201161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374255 + ... + 1445343.

It is an arithmetic number, because the mean of its divisors is an integer number (8376676880).

Almost surely, 2^100221201111 is an apocalyptic number.

100221201111 is a deficient number, since it is larger than the sum of its proper divisors (33805628969).

100221201111 is an equidigital number, since it uses as much as digits as its factorization.

100221201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72486.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100221201111 its reverse (111102122001), we get a palindrome (211323323112).

The spelling of 100221201111 in words is "one hundred billion, two hundred twenty-one million, two hundred one thousand, one hundred eleven".