111221212100011 has 16 divisors (see below), whose sum is σ = 119880487486144. Its totient is φ = 102576794027904.

The previous prime is 111221212099969. The next prime is 111221212100039. The reversal of 111221212100011 is 110001212122111.

It is a cyclic number.

It is not a de Polignac number, because 111221212100011 - 2¹³ = 111221212091819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221212100051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91608145 + ... + 92814301.

It is an arithmetic number, because the mean of its divisors is an integer number (7492530467884).

Almost surely, 2^{111221212100011} is an apocalyptic number.

111221212100011 is a deficient number, since it is larger than the sum of its proper divisors (8659275386133).

111221212100011 is a wasteful number, since it uses less digits than its factorization.

111221212100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212310.

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

Adding to 111221212100011 its reverse (110001212122111), we get a palindrome (221222424222122).

The spelling of 111221212100011 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, eleven".