111222221120011 has 4 divisors (see below), whose sum is σ = 112630097336800. Its totient is φ = 109814344903224.

The previous prime is 111222221120009. The next prime is 111222221120041. The reversal of 111222221120011 is 110021122222111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111222221120011 - 2¹ = 111222221120009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222221120041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703938108276 + ... + 703938108433.

It is an arithmetic number, because the mean of its divisors is an integer number (28157524334200).

Almost surely, 2^{111222221120011} is an apocalyptic number.

111222221120011 is a deficient number, since it is larger than the sum of its proper divisors (1407876216789).

111222221120011 is an equidigital number, since it uses as much as digits as its factorization.

111222221120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407876216788.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111222221120011 its reverse (110021122222111), we get a palindrome (221243343342122).

The spelling of 111222221120011 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, eleven".