100001111111222 has 4 divisors (see below), whose sum is σ = 150001666666836. Its totient is φ = 50000555555610.

The previous prime is 100001111111207. The next prime is 100001111111227. The reversal of 100001111111222 is 222111111100001.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 100001111111197 and 100001111111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001111111227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000277777804 + ... + 25000277777807.

It is an arithmetic number, because the mean of its divisors is an integer number (37500416666709).

Almost surely, 2^{100001111111222} is an apocalyptic number.

100001111111222 is a deficient number, since it is larger than the sum of its proper divisors (50000555555614).

100001111111222 is an equidigital number, since it uses as much as digits as its factorization.

100001111111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000555555613.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100001111111222 its reverse (222111111100001), we get a palindrome (322112222211223).

The spelling of 100001111111222 in words is "one hundred trillion, one billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".