111111222220201 has 8 divisors (see below), whose sum is σ = 131363021344320. Its totient is φ = 91954114940688.

The previous prime is 111111222220181. The next prime is 111111222220217. The reversal of 111111222220201 is 102022222111111.

It is a happy number.

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

It is not a de Polignac number, because 111111222220201 - 2⁵ = 111111222220169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111222620201) 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 7 ways as a sum of consecutive naturals, for example, 273672960931 + ... + 273672961336.

It is an arithmetic number, because the mean of its divisors is an integer number (16420377668040).

Almost surely, 2^{111111222220201} is an apocalyptic number.

It is an amenable number.

111111222220201 is a deficient number, since it is larger than the sum of its proper divisors (20251799124119).

111111222220201 is an equidigital number, since it uses as much as digits as its factorization.

111111222220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547345922303.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111111222220201 its reverse (102022222111111), we get a palindrome (213133444331312).

The spelling of 111111222220201 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred one".