111220002211121 has 4 divisors (see below), whose sum is σ = 113318492818932. Its totient is φ = 109121511603312.

The previous prime is 111220002211103. The next prime is 111220002211151. The reversal of 111220002211121 is 121112200022111.

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 37703713912225 + 73516288298896 = 6140335^2 + 8574164^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220002211121 - 2²² = 111219998016817 is a prime.

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 111220002211121.

It is not an unprimeable number, because it can be changed into a prime (111220002211151) 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, 1049245303826 + ... + 1049245303931.

It is an arithmetic number, because the mean of its divisors is an integer number (28329623204733).

Almost surely, 2^{111220002211121} is an apocalyptic number.

It is an amenable number.

111220002211121 is a deficient number, since it is larger than the sum of its proper divisors (2098490607811).

111220002211121 is an equidigital number, since it uses as much as digits as its factorization.

111220002211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098490607810.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111220002211121 its reverse (121112200022111), we get a palindrome (232332202233232).

The spelling of 111220002211121 in words is "one hundred eleven trillion, two hundred twenty billion, two million, two hundred eleven thousand, one hundred twenty-one".