111221212100201 has 8 divisors (see below), whose sum is σ = 127112236599744. Its totient is φ = 95330757579120.

The previous prime is 111221212100197. The next prime is 111221212100261. The reversal of 111221212100201 is 102001212122111.

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

It is not a de Polignac number, because 111221212100201 - 2² = 111221212100197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111221212100201.

It is not an unprimeable number, because it can be changed into a prime (111221212100261) 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, 142076390 + ... + 142857071.

It is an arithmetic number, because the mean of its divisors is an integer number (15889029574968).

Almost surely, 2^{111221212100201} is an apocalyptic number.

It is an amenable number.

111221212100201 is a deficient number, since it is larger than the sum of its proper divisors (15891024499543).

111221212100201 is an equidigital number, since it uses as much as digits as its factorization.

111221212100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284989231.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111221212100201 its reverse (102001212122111), we get a palindrome (213222424222312).

The spelling of 111221212100201 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, two hundred one".