11123011213212 has 24 divisors (see below), whose sum is σ = 25980421686912. Its totient is φ = 3703851996400.

The previous prime is 11123011213189. The next prime is 11123011213231. The reversal of 11123011213212 is 21231211032111.

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 7 ways as a sum of consecutive naturals, for example, 477288864 + ... + 477312167.

It is an arithmetic number, because the mean of its divisors is an integer number (1082517570288).

Almost surely, 2^{11123011213212} is an apocalyptic number.

11123011213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11123011213212 is an abundant number, since it is smaller than the sum of its proper divisors (14857410473700).

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

11123011213212 is a wasteful number, since it uses less digits than its factorization.

11123011213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954602009 (or 954602007 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11123011213212 its reverse (21231211032111), we get a palindrome (32354222245323).

The spelling of 11123011213212 in words is "eleven trillion, one hundred twenty-three billion, eleven million, two hundred thirteen thousand, two hundred twelve".