111222021101 has 4 divisors (see below), whose sum is σ = 111308307900. Its totient is φ = 111135734304.

The previous prime is 111222021083. The next prime is 111222021121. The reversal of 111222021101 is 101120222111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84120301225 + 27101719876 = 290035^2 + 164626^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222021101 - 2⁶ = 111222021037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222021121) 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 3 ways as a sum of consecutive naturals, for example, 43141466 + ... + 43144043.

It is an arithmetic number, because the mean of its divisors is an integer number (27827076975).

Almost surely, 2^111222021101 is an apocalyptic number.

It is an amenable number.

111222021101 is a deficient number, since it is larger than the sum of its proper divisors (86286799).

111222021101 is an equidigital number, since it uses as much as digits as its factorization.

111222021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86286798.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111222021101 its reverse (101120222111), we get a palindrome (212342243212).

The spelling of 111222021101 in words is "one hundred eleven billion, two hundred twenty-two million, twenty-one thousand, one hundred one".