1111001122201 has 4 divisors (see below), whose sum is σ = 1111045184100. Its totient is φ = 1110957060304.

The previous prime is 1111001122193. The next prime is 1111001122219. The reversal of 1111001122201 is 1022211001111.

It is a happy number.

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 590936588176 + 520064534025 = 768724^2 + 721155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111001122201 - 2³ = 1111001122193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111001122241) 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 3 ways as a sum of consecutive naturals, for example, 21993106 + ... + 22043563.

It is an arithmetic number, because the mean of its divisors is an integer number (277761296025).

Almost surely, 2^{1111001122201} is an apocalyptic number.

It is an amenable number.

1111001122201 is a deficient number, since it is larger than the sum of its proper divisors (44061899).

1111001122201 is an equidigital number, since it uses as much as digits as its factorization.

1111001122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44061898.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111001122201 its reverse (1022211001111), we get a palindrome (2133212123312).

The spelling of 1111001122201 in words is "one trillion, one hundred eleven billion, one million, one hundred twenty-two thousand, two hundred one".