11123013212 has 48 divisors (see below), whose sum is σ = 20877927840. Its totient is φ = 5169733632.

The previous prime is 11123013203. The next prime is 11123013217. The reversal of 11123013212 is 21231032111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123013217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087868 + ... + 1098044.

It is an arithmetic number, because the mean of its divisors is an integer number (434956830).

Almost surely, 2^11123013212 is an apocalyptic number.

It is an amenable number.

11123013212 is a deficient number, since it is larger than the sum of its proper divisors (9754914628).

11123013212 is a wasteful number, since it uses less digits than its factorization.

11123013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470 (or 10468 counting only the distinct ones).

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

Adding to 11123013212 its reverse (21231032111), we get a palindrome (32354045323).

The spelling of 11123013212 in words is "eleven billion, one hundred twenty-three million, thirteen thousand, two hundred twelve".