100112212221 has 32 divisors (see below), whose sum is σ = 157914316800. Its totient is φ = 55198637760.

The previous prime is 100112212159. The next prime is 100112212261. The reversal of 100112212221 is 122212211001.

It is not a de Polignac number, because 100112212221 - 2⁷ = 100112212093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100112212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112212261) 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, 904420 + ... + 1009058.

It is an arithmetic number, because the mean of its divisors is an integer number (4934822400).

Almost surely, 2^100112212221 is an apocalyptic number.

It is an amenable number.

100112212221 is a deficient number, since it is larger than the sum of its proper divisors (57802104579).

100112212221 is a wasteful number, since it uses less digits than its factorization.

100112212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106249.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100112212221 its reverse (122212211001), we get a palindrome (222324423222).

The spelling of 100112212221 in words is "one hundred billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-one".