111211022222201 has 8 divisors (see below), whose sum is σ = 121346977735008. Its totient is φ = 101079377140000.

The previous prime is 111211022222191. The next prime is 111211022222203. The reversal of 111211022222201 is 102222220112111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111211022222201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211022222203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077553700 + ... + 1077656901.

It is an arithmetic number, because the mean of its divisors is an integer number (15168372216876).

Almost surely, 2^{111211022222201} is an apocalyptic number.

111211022222201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111211022222201 is a deficient number, since it is larger than the sum of its proper divisors (10135955512807).

111211022222201 is a wasteful number, since it uses less digits than its factorization.

111211022222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155215303.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111211022222201 its reverse (102222220112111), we get a palindrome (213433242334312).

The spelling of 111211022222201 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-two million, two hundred twenty-two thousand, two hundred one".