11133321212 has 96 divisors (see below), whose sum is σ = 22755600000. Its totient is φ = 4723310592.

The previous prime is 11133321209. The next prime is 11133321229. The reversal of 11133321212 is 21212333111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8913164 + ... + 8914412.

It is an arithmetic number, because the mean of its divisors is an integer number (237037500).

Almost surely, 2^11133321212 is an apocalyptic number.

It is an amenable number.

11133321212 is an abundant number, since it is smaller than the sum of its proper divisors (11622278788).

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

11133321212 is a wasteful number, since it uses less digits than its factorization.

11133321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1573 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 11133321212 its reverse (21212333111), we get a palindrome (32345654323).

The spelling of 11133321212 in words is "eleven billion, one hundred thirty-three million, three hundred twenty-one thousand, two hundred twelve".