111201012212011 has 16 divisors (see below), whose sum is σ = 114572072887488. Its totient is φ = 107879951088000.

The previous prime is 111201012211981. The next prime is 111201012212089. The reversal of 111201012212011 is 110212210102111.

It is a cyclic number.

It is not a de Polignac number, because 111201012212011 - 2³¹ = 111198864728363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201012210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9668775 + ... + 17773216.

It is an arithmetic number, because the mean of its divisors is an integer number (7160754555468).

Almost surely, 2^{111201012212011} is an apocalyptic number.

111201012212011 is a deficient number, since it is larger than the sum of its proper divisors (3371060675477).

111201012212011 is a wasteful number, since it uses less digits than its factorization.

111201012212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27442902.

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

Adding to 111201012212011 its reverse (110212210102111), we get a palindrome (221413222314122).

The spelling of 111201012212011 in words is "one hundred eleven trillion, two hundred one billion, twelve million, two hundred twelve thousand, eleven".