11112122212112 has 10 divisors (see below), whose sum is σ = 21529736785998. Its totient is φ = 5556061106048.

The previous prime is 11112122212097. The next prime is 11112122212199. The reversal of 11112122212112 is 21121222121111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11112062242576 + 59969536 = 3333476^2 + 7744^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347253819113 + ... + 347253819144.

Almost surely, 2^{11112122212112} is an apocalyptic number.

It is an amenable number.

11112122212112 is a deficient number, since it is larger than the sum of its proper divisors (10417614573886).

11112122212112 is an equidigital number, since it uses as much as digits as its factorization.

11112122212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694507638265 (or 694507638259 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 11112122212112 its reverse (21121222121111), we get a palindrome (32233344333223).

The spelling of 11112122212112 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twelve".