1101111222211 has 48 divisors (see below), whose sum is σ = 1494324523008. Its totient is φ = 787859654400.

The previous prime is 1101111222203. The next prime is 1101111222329. The reversal of 1101111222211 is 1122221111011.

It is not a de Polignac number, because 1101111222211 - 2³ = 1101111222203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101111262211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2263975 + ... + 2706991.

It is an arithmetic number, because the mean of its divisors is an integer number (31131760896).

Almost surely, 2^{1101111222211} is an apocalyptic number.

1101111222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101111222211 is a deficient number, since it is larger than the sum of its proper divisors (393213300797).

1101111222211 is a wasteful number, since it uses less digits than its factorization.

1101111222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443252 (or 443239 counting only the distinct ones).

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

Adding to 1101111222211 its reverse (1122221111011), we get a palindrome (2223332333222).

It can be divided in two parts, 11011 and 11222211, that multiplied together give a palindrome (123567765321).

The spelling of 1101111222211 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-two thousand, two hundred eleven".