111120221211 has 16 divisors (see below), whose sum is σ = 148849402368. Its totient is φ = 73735754400.

The previous prime is 111120221171. The next prime is 111120221221. The reversal of 111120221211 is 112122021111.

It is a happy number.

It is not a de Polignac number, because 111120221211 - 2⁹ = 111120220699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111120221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3129246 + ... + 3164556.

It is an arithmetic number, because the mean of its divisors is an integer number (9303087648).

Almost surely, 2^111120221211 is an apocalyptic number.

111120221211 is a deficient number, since it is larger than the sum of its proper divisors (37729181157).

111120221211 is a wasteful number, since it uses less digits than its factorization.

111120221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40162.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111120221211 its reverse (112122021111), we get a palindrome (223242242322).

The spelling of 111120221211 in words is "one hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".