11231033212 has 12 divisors (see below), whose sum is σ = 22462066480. Its totient is φ = 4813299936.

The previous prime is 11231033173. The next prime is 11231033263. The reversal of 11231033212 is 21233013211.

11231033212 is an admirable number.

It is a super-2 number, since 2×11231033212² (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 11231033212.

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 3 ways as a sum of consecutive naturals, for example, 200554137 + ... + 200554192.

Almost surely, 2^11231033212 is an apocalyptic number.

It is an amenable number.

11231033212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11231033212 is a wasteful number, since it uses less digits than its factorization.

11231033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401108340 (or 401108338 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11231033212 its reverse (21233013211), we get a palindrome (32464046423).

The spelling of 11231033212 in words is "eleven billion, two hundred thirty-one million, thirty-three thousand, two hundred twelve".