111221122112211 has 8 divisors (see below), whose sum is σ = 152302797847504. Its totient is φ = 72143430559200.

The previous prime is 111221122112203. The next prime is 111221122112213. The reversal of 111221122112211 is 112211221122111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111221122112211 - 2³ = 111221122112203 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111221122112213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500996045440 + ... + 500996045661.

It is an arithmetic number, because the mean of its divisors is an integer number (19037849730938).

Almost surely, 2^{111221122112211} is an apocalyptic number.

111221122112211 is a deficient number, since it is larger than the sum of its proper divisors (41081675735293).

111221122112211 is a wasteful number, since it uses less digits than its factorization.

111221122112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001992091141.

The product of its digits is 64, while the sum is 21.

Adding to 111221122112211 its reverse (112211221122111), we get a palindrome (223432343234322).

The spelling of 111221122112211 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred eleven".