1111221111201 has 8 divisors (see below), whose sum is σ = 1482440897280. Its totient is φ = 740407699632.

The previous prime is 1111221111199. The next prime is 1111221111227. The reversal of 1111221111201 is 1021111221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111221111201 - 2¹ = 1111221111199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111221111601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101587246 + ... + 101598183.

It is an arithmetic number, because the mean of its divisors is an integer number (185305112160).

Almost surely, 2^{1111221111201} is an apocalyptic number.

It is an amenable number.

1111221111201 is a deficient number, since it is larger than the sum of its proper divisors (371219786079).

1111221111201 is a wasteful number, since it uses less digits than its factorization.

1111221111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203187255.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1111221111201 its reverse (1021111221111), we get a palindrome (2132332332312).

The spelling of 1111221111201 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".