100112221221 has 16 divisors (see below), whose sum is σ = 138337855488. Its totient is φ = 64331190000.

The previous prime is 100112221177. The next prime is 100112221229. The reversal of 100112221221 is 122122211001.

It is not a de Polignac number, because 100112221221 - 2¹⁴ = 100112204837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100112221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112221229) 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, 2121031 + ... + 2167716.

It is an arithmetic number, because the mean of its divisors is an integer number (8646115968).

Almost surely, 2^100112221221 is an apocalyptic number.

It is an amenable number.

100112221221 is a deficient number, since it is larger than the sum of its proper divisors (38225634267).

100112221221 is a wasteful number, since it uses less digits than its factorization.

100112221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289032.

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

Adding to 100112221221 its reverse (122122211001), we get a palindrome (222234432222).

The spelling of 100112221221 in words is "one hundred billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".