100012221222 has 32 divisors (see below), whose sum is σ = 206078699232. Its totient is φ = 32334050304.

The previous prime is 100012221209. The next prime is 100012221251. The reversal of 100012221222 is 222122210001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640203 + ... + 780950.

It is an arithmetic number, because the mean of its divisors is an integer number (6439959351).

Almost surely, 2^100012221222 is an apocalyptic number.

100012221222 is an abundant number, since it is smaller than the sum of its proper divisors (106066478010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100012221222 is a wasteful number, since it uses less digits than its factorization.

100012221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421512.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100012221222 its reverse (222122210001), we get a palindrome (322134431223).

It can be divided in two parts, 10001 and 2221222, that multiplied together give a palindrome (22214441222).

The spelling of 100012221222 in words is "one hundred billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".