11211122112 has 28 divisors (see below), whose sum is σ = 29662761096. Its totient is φ = 3737040640.

The previous prime is 11211122101. The next prime is 11211122119. The reversal of 11211122112 is 21122111211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11211122091 and 11211122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211122119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29195439 + ... + 29195822.

Almost surely, 2^11211122112 is an apocalyptic number.

11211122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211122112 is an abundant number, since it is smaller than the sum of its proper divisors (18451638984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211122112 is an equidigital number, since it uses as much as digits as its factorization.

11211122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58391276 (or 58391266 counting only the distinct ones).

The product of its digits is 16, while the sum is 15.

Adding to 11211122112 its reverse (21122111211), we get a palindrome (32333233323).

The spelling of 11211122112 in words is "eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twelve".