11111120220211 has 32 divisors (see below), whose sum is σ = 12752776339200. Its totient is φ = 9586616081280.

The previous prime is 11111120220203. The next prime is 11111120220217. The reversal of 11111120220211 is 11202202111111.

It is not a de Polignac number, because 11111120220211 - 2³ = 11111120220203 is a prime.

It is a super-2 number, since 2×11111120220211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111120220217) 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, 425586220 + ... + 425612326.

It is an arithmetic number, because the mean of its divisors is an integer number (398524260600).

Almost surely, 2^{11111120220211} is an apocalyptic number.

11111120220211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11111120220211 is a deficient number, since it is larger than the sum of its proper divisors (1641656118989).

11111120220211 is a wasteful number, since it uses less digits than its factorization.

11111120220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48819.

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

Adding to 11111120220211 its reverse (11202202111111), we get a palindrome (22313322331322).

It can be divided in two parts, 1111 and 1120220211, that multiplied together give a palindrome (1244564654421).

The spelling of 11111120220211 in words is "eleven trillion, one hundred eleven billion, one hundred twenty million, two hundred twenty thousand, two hundred eleven".