11112211021201 has 4 divisors (see below), whose sum is σ = 11237067324900. Its totient is φ = 10987354717504.

The previous prime is 11112211021183. The next prime is 11112211021211. The reversal of 11112211021201 is 10212011221111.

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 6853002494976 + 4259208526225 = 2617824^2 + 2063785^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112211021201 - 2¹⁹ = 11112210496913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112211021211) 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, 62428151716 + ... + 62428151893.

It is an arithmetic number, because the mean of its divisors is an integer number (2809266831225).

Almost surely, 2^{11112211021201} is an apocalyptic number.

It is an amenable number.

11112211021201 is a deficient number, since it is larger than the sum of its proper divisors (124856303699).

11112211021201 is an equidigital number, since it uses as much as digits as its factorization.

11112211021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124856303698.

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

Adding to 11112211021201 its reverse (10212011221111), we get a palindrome (21324222242312).

The spelling of 11112211021201 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, twenty-one thousand, two hundred one".