1001112221222 has 32 divisors (see below), whose sum is σ = 1608676982784. Its totient is φ = 466152095200.

The previous prime is 1001112221171. The next prime is 1001112221231. The reversal of 1001112221222 is 2221222111001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001112221222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799229 + ... + 1625112.

It is an arithmetic number, because the mean of its divisors is an integer number (50271155712).

Almost surely, 2^{1001112221222} is an apocalyptic number.

1001112221222 is a deficient number, since it is larger than the sum of its proper divisors (607564761562).

1001112221222 is a wasteful number, since it uses less digits than its factorization.

1001112221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424604.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1001112221222 its reverse (2221222111001), we get a palindrome (3222334332223).

The spelling of 1001112221222 in words is "one trillion, one billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".