11133311212 has 24 divisors (see below), whose sum is σ = 20515947200. Its totient is φ = 5271818256.

The previous prime is 11133311209. The next prime is 11133311213. The reversal of 11133311212 is 21211333111.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 11133311212.

It is not an unprimeable number, because it can be changed into a prime (11133311213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205183 + ... + 253705.

Almost surely, 2^11133311212 is an apocalyptic number.

It is an amenable number.

11133311212 is a deficient number, since it is larger than the sum of its proper divisors (9382635988).

11133311212 is a wasteful number, since it uses less digits than its factorization.

11133311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51565 (or 51563 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 11133311212 its reverse (21211333111), we get a palindrome (32344644323).

The spelling of 11133311212 in words is "eleven billion, one hundred thirty-three million, three hundred eleven thousand, two hundred twelve".