111122120220211 has 32 divisors (see below), whose sum is σ = 118061900697600. Its totient is φ = 104296095292320.

The previous prime is 111122120220187. The next prime is 111122120220233. The reversal of 111122120220211 is 112022021221111.

It is a happy number.

It is not a de Polignac number, because 111122120220211 - 2⁵ = 111122120220179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122120220511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1240282026 + ... + 1240371616.

It is an arithmetic number, because the mean of its divisors is an integer number (3689434396800).

Almost surely, 2^{111122120220211} is an apocalyptic number.

111122120220211 is a deficient number, since it is larger than the sum of its proper divisors (6939780477389).

111122120220211 is a wasteful number, since it uses less digits than its factorization.

111122120220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91039.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111122120220211 its reverse (112022021221111), we get a palindrome (223144141441322).

The spelling of 111122120220211 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty million, two hundred twenty thousand, two hundred eleven".