111222220201211 has 16 divisors (see below), whose sum is σ = 127256035568640. Its totient is φ = 95224645414080.

The previous prime is 111222220201207. The next prime is 111222220201271. The reversal of 111222220201211 is 112102022222111.

It is not a de Polignac number, because 111222220201211 - 2² = 111222220201207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222220201201) 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, 155107175 + ... + 155822591.

It is an arithmetic number, because the mean of its divisors is an integer number (7953502223040).

Almost surely, 2^{111222220201211} is an apocalyptic number.

111222220201211 is a deficient number, since it is larger than the sum of its proper divisors (16033815367429).

111222220201211 is an equidigital number, since it uses as much as digits as its factorization.

111222220201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740714.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111222220201211 its reverse (112102022222111), we get a palindrome (223324242423322).

The spelling of 111222220201211 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, two hundred one thousand, two hundred eleven".