11123011212 has 24 divisors (see below), whose sum is σ = 25956623616. Its totient is φ = 3707251728.

The previous prime is 11123011199. The next prime is 11123011253. The reversal of 11123011212 is 21211032111.

It is a junction number, because it is equal to n+sod(n) for n = 11123011191 and 11123011200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69753 + ... + 164655.

It is an arithmetic number, because the mean of its divisors is an integer number (1081525984).

Almost surely, 2^11123011212 is an apocalyptic number.

11123011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11123011212 is an abundant number, since it is smaller than the sum of its proper divisors (14833612404).

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

11123011212 is a wasteful number, since it uses less digits than its factorization.

11123011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104677 (or 104675 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11123011212 its reverse (21211032111), we get a palindrome (32334043323).

The spelling of 11123011212 in words is "eleven billion, one hundred twenty-three million, eleven thousand, two hundred twelve".