11211112211122 has 4 divisors (see below), whose sum is σ = 16816668316686. Its totient is φ = 5605556105560.

The previous prime is 11211112211111. The next prime is 11211112211129. The reversal of 11211112211122 is 22111221111211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10769364552241 + 441747658881 = 3281671^2 + 664641^2 .

It is a super-3 number, since 3×11211112211122³ (a number of 40 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11211112211122.

It is not an unprimeable number, because it can be changed into a prime (11211112211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802778052779 + ... + 2802778052782.

Almost surely, 2^{11211112211122} is an apocalyptic number.

11211112211122 is a deficient number, since it is larger than the sum of its proper divisors (5605556105564).

11211112211122 is an equidigital number, since it uses as much as digits as its factorization.

11211112211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605556105563.

The product of its digits is 32, while the sum is 19.

Adding to 11211112211122 its reverse (22111221111211), we get a palindrome (33322333322333).

The spelling of 11211112211122 in words is "eleven trillion, two hundred eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred twenty-two".