11233231212 has 48 divisors (see below), whose sum is σ = 29962420992. Its totient is φ = 3208729920.

The previous prime is 11233231201. The next prime is 11233231213. The reversal of 11233231212 is 21213233211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (11233231213) 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, 404287 + ... + 431177.

It is an arithmetic number, because the mean of its divisors is an integer number (624217104).

Almost surely, 2^11233231212 is an apocalyptic number.

11233231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11233231212 is an abundant number, since it is smaller than the sum of its proper divisors (18729189780).

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

11233231212 is a wasteful number, since it uses less digits than its factorization.

11233231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31878 (or 31876 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 11233231212 its reverse (21213233211), we get a palindrome (32446464423).

The spelling of 11233231212 in words is "eleven billion, two hundred thirty-three million, two hundred thirty-one thousand, two hundred twelve".