11212121322 has 24 divisors (see below), whose sum is σ = 24949496676. Its totient is φ = 3636363456.

The previous prime is 11212121321. The next prime is 11212121329. The reversal of 11212121322 is 22312121211.

11212121322 is a `hidden beast` number, since 11 + 212 + 121 + 322 = 666.

11212121322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9263870001 + 1948251321 = 96249^2 + 44139^2 .

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 = 11212121295 and 11212121304.

It is not an unprimeable number, because it can be changed into a prime (11212121321) 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 11 ways as a sum of consecutive naturals, for example, 8416843 + ... + 8418174.

Almost surely, 2^11212121322 is an apocalyptic number.

11212121322 is an abundant number, since it is smaller than the sum of its proper divisors (13737375354).

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

11212121322 is a wasteful number, since it uses less digits than its factorization.

11212121322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835062 (or 16835059 counting only the distinct ones).

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

Adding to 11212121322 its reverse (22312121211), we get a palindrome (33524242533).

The spelling of 11212121322 in words is "eleven billion, two hundred twelve million, one hundred twenty-one thousand, three hundred twenty-two".