111122011211 has 4 divisors (see below), whose sum is σ = 111125452152. Its totient is φ = 111118570272.

The previous prime is 111122011207. The next prime is 111122011219. The reversal of 111122011211 is 112110221111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112110221111 = 7 ⋅16015745873.

It is a cyclic number.

It is not a de Polignac number, because 111122011211 - 2² = 111122011207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122011219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671566 + ... + 1736771.

It is an arithmetic number, because the mean of its divisors is an integer number (27781363038).

Almost surely, 2^111122011211 is an apocalyptic number.

111122011211 is a deficient number, since it is larger than the sum of its proper divisors (3440941).

111122011211 is an equidigital number, since it uses as much as digits as its factorization.

111122011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440940.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111122011211 its reverse (112110221111), we get a palindrome (223232232322).

The spelling of 111122011211 in words is "one hundred eleven billion, one hundred twenty-two million, eleven thousand, two hundred eleven".