111101220220211 has 32 divisors (see below), whose sum is σ = 126375095616000. Its totient is φ = 96825426347520.

The previous prime is 111101220220187. The next prime is 111101220220223. The reversal of 111101220220211 is 112022022101111.

It is a de Polignac number, because none of the positive numbers 2^k-111101220220211 is a prime.

It is a super-2 number, since 2×111101220220211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111101220220211.

It is not an unprimeable number, because it can be changed into a prime (111101220220241) 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, 488907626 + ... + 489134816.

It is an arithmetic number, because the mean of its divisors is an integer number (3949221738000).

Almost surely, 2^{111101220220211} is an apocalyptic number.

111101220220211 is a deficient number, since it is larger than the sum of its proper divisors (15273875395789).

111101220220211 is a wasteful number, since it uses less digits than its factorization.

111101220220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233979.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111101220220211 its reverse (112022022101111), we get a palindrome (223123242321322).

The spelling of 111101220220211 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty million, two hundred twenty thousand, two hundred eleven".