111220112021011 has 64 divisors (see below), whose sum is σ = 135946127232000. Its totient is φ = 88876437221376.

The previous prime is 111220112020981. The next prime is 111220112021027. The reversal of 111220112021011 is 110120211022111.

It is not a de Polignac number, because 111220112021011 - 2⁷ = 111220112020883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220113021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6075268720 + ... + 6075287026.

It is an arithmetic number, because the mean of its divisors is an integer number (2124158238000).

Almost surely, 2^{111220112021011} is an apocalyptic number.

111220112021011 is a deficient number, since it is larger than the sum of its proper divisors (24726015210989).

111220112021011 is a wasteful number, since it uses less digits than its factorization.

111220112021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21308.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111220112021011 its reverse (110120211022111), we get a palindrome (221340323043122).

The spelling of 111220112021011 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twelve million, twenty-one thousand, eleven".