11212312122 has 48 divisors (see below), whose sum is σ = 26508998880. Its totient is φ = 3396751200.

The previous prime is 11212312121. The next prime is 11212312147. The reversal of 11212312122 is 22121321211.

11212312122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11212312122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 11212312095 and 11212312104.

It is not an unprimeable number, because it can be changed into a prime (11212312121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1228797 + ... + 1237887.

It is an arithmetic number, because the mean of its divisors is an integer number (552270810).

Almost surely, 2^11212312122 is an apocalyptic number.

11212312122 is an abundant number, since it is smaller than the sum of its proper divisors (15296686758).

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

11212312122 is a wasteful number, since it uses less digits than its factorization.

11212312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15339 (or 15336 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11212312122 its reverse (22121321211), we get a palindrome (33333633333).

The spelling of 11212312122 in words is "eleven billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty-two".