111221212201 has 8 divisors (see below), whose sum is σ = 121345687008. Its totient is φ = 101098980000.

The previous prime is 111221212187. The next prime is 111221212229. The reversal of 111221212201 is 102212122111.

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 111221212201 - 2⁷ = 111221212073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221212601) 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, 456100 + ... + 656101.

It is an arithmetic number, because the mean of its divisors is an integer number (15168210876).

Almost surely, 2^111221212201 is an apocalyptic number.

111221212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111221212201 is a deficient number, since it is larger than the sum of its proper divisors (10124474807).

111221212201 is a wasteful number, since it uses less digits than its factorization.

111221212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121303.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111221212201 its reverse (102212122111), we get a palindrome (213433334312).

The spelling of 111221212201 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, two hundred one".