100221012111 has 64 divisors (see below), whose sum is σ = 151571160576. Its totient is φ = 58369536000.

The previous prime is 100221012103. The next prime is 100221012127. The reversal of 100221012111 is 111210122001.

It is not a de Polignac number, because 100221012111 - 2³ = 100221012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221012161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52388491 + ... + 52390403.

It is an arithmetic number, because the mean of its divisors is an integer number (2368299384).

Almost surely, 2^100221012111 is an apocalyptic number.

100221012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100221012111 is a deficient number, since it is larger than the sum of its proper divisors (51350148465).

100221012111 is a wasteful number, since it uses less digits than its factorization.

100221012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

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

Adding to 100221012111 its reverse (111210122001), we get a palindrome (211431134112).

The spelling of 100221012111 in words is "one hundred billion, two hundred twenty-one million, twelve thousand, one hundred eleven".