11011223312 has 20 divisors (see below), whose sum is σ = 22022447616. Its totient is φ = 5328011040.

The previous prime is 11011223291. The next prime is 11011223329. The reversal of 11011223312 is 21332211011.

11011223312 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11099528 + ... + 11100519.

Almost surely, 2^11011223312 is an apocalyptic number.

It is an amenable number.

11011223312 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.

11011223312 is a wasteful number, since it uses less digits than its factorization.

11011223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22200086 (or 22200080 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11011223312 its reverse (21332211011), we get a palindrome (32343434323).

The spelling of 11011223312 in words is "eleven billion, eleven million, two hundred twenty-three thousand, three hundred twelve".