100001222222 has 24 divisors (see below), whose sum is σ = 165003577200. Its totient is φ = 45420494240.

The previous prime is 100001222173. The next prime is 100001222287. The reversal of 100001222222 is 222222100001.

It is a junction number, because it is equal to n+sod(n) for n = 100001222197 and 100001222206.

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 11 ways as a sum of consecutive naturals, for example, 162554 + ... + 475842.

It is an arithmetic number, because the mean of its divisors is an integer number (6875149050).

Almost surely, 2^100001222222 is an apocalyptic number.

100001222222 is a deficient number, since it is larger than the sum of its proper divisors (65002354978).

100001222222 is a wasteful number, since it uses less digits than its factorization.

100001222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314632 (or 314621 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100001222222 its reverse (222222100001), we get a palindrome (322223322223).

It can be divided in two parts, 100001 and 222222, that multiplied together give a palindrome (22222422222).

The spelling of 100001222222 in words is "one hundred billion, one million, two hundred twenty-two thousand, two hundred twenty-two".