111122220221011 has 32 divisors (see below), whose sum is σ = 120454654763520. Its totient is φ = 102165413011200.

The previous prime is 111122220220961. The next prime is 111122220221039. The reversal of 111122220221011 is 110122022221111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111122220221011 - 2¹³ = 111122220212819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111122220221011.

It is not an unprimeable number, because it can be changed into a prime (111122220224011) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 848124496 + ... + 848255506.

It is an arithmetic number, because the mean of its divisors is an integer number (3764207961360).

Almost surely, 2^{111122220221011} is an apocalyptic number.

111122220221011 is a deficient number, since it is larger than the sum of its proper divisors (9332434542509).

111122220221011 is a wasteful number, since it uses less digits than its factorization.

111122220221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136795.

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

Adding to 111122220221011 its reverse (110122022221111), we get a palindrome (221244242442122).

The spelling of 111122220221011 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twenty-one thousand, eleven".