11111110220201 has 8 divisors (see below), whose sum is σ = 11175475487880. Its totient is φ = 11046746552832.

The previous prime is 11111110220149. The next prime is 11111110220207. The reversal of 11111110220201 is 10202201111111.

It can be written as a sum of positive squares in 4 ways, for example, as 5597766721600 + 5513343498601 = 2365960^2 + 2348051^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11111110220201 - 2³⁰ = 11110036478377 is a prime.

It is a super-2 number, since 2×11111110220201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11111110220207) 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 7 ways as a sum of consecutive naturals, for example, 15306791 + ... + 16016243.

It is an arithmetic number, because the mean of its divisors is an integer number (1396934435985).

Almost surely, 2^{11111110220201} is an apocalyptic number.

It is an amenable number.

11111110220201 is a deficient number, since it is larger than the sum of its proper divisors (64365267679).

11111110220201 is an equidigital number, since it uses as much as digits as its factorization.

11111110220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800155.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11111110220201 its reverse (10202201111111), we get a palindrome (21313311331312).

The spelling of 11111110220201 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, two hundred twenty thousand, two hundred one".