111122121201211 has 16 divisors (see below), whose sum is σ = 113805766093824. Its totient is φ = 108479876327424.

The previous prime is 111122121201163. The next prime is 111122121201331. The reversal of 111122121201211 is 112102121221111.

It is a cyclic number.

It is not a de Polignac number, because 111122121201211 - 2¹⁹ = 111122120676923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122121001211) 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, 23939290 + ... + 28201663.

It is an arithmetic number, because the mean of its divisors is an integer number (7112860380864).

Almost surely, 2^{111122121201211} is an apocalyptic number.

111122121201211 is a deficient number, since it is larger than the sum of its proper divisors (2683644892613).

111122121201211 is a wasteful number, since it uses less digits than its factorization.

111122121201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52141350.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111122121201211 its reverse (112102121221111), we get a palindrome (223224242422322).

The spelling of 111122121201211 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, two hundred eleven".