11321321212 has 12 divisors (see below), whose sum is σ = 19817726040. Its totient is φ = 5659113776.

The previous prime is 11321321159. The next prime is 11321321227. The reversal of 11321321212 is 21212312311.

It is a super-2 number, since 2×11321321212² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11321321212.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 370162 + ... + 399577.

It is an arithmetic number, because the mean of its divisors is an integer number (1651477170).

Almost surely, 2^11321321212 is an apocalyptic number.

It is an amenable number.

11321321212 is a deficient number, since it is larger than the sum of its proper divisors (8496404828).

11321321212 is a wasteful number, since it uses less digits than its factorization.

11321321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773420 (or 773418 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11321321212 its reverse (21212312311), we get a palindrome (32533633523).

The spelling of 11321321212 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred twelve".