11013331212 has 120 divisors (see below), whose sum is σ = 31665982656. Its totient is φ = 3316557312.

The previous prime is 11013331207. The next prime is 11013331213. The reversal of 11013331212 is 21213331011.

11013331212 is a `hidden beast` number, since 110 + 13 + 331 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11013331213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 170148 + ... + 225780.

Almost surely, 2^11013331212 is an apocalyptic number.

11013331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11013331212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15832991328).

11013331212 is an abundant number, since it is smaller than the sum of its proper divisors (20652651444).

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

11013331212 is a wasteful number, since it uses less digits than its factorization.

11013331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55709 (or 55698 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11013331212 its reverse (21213331011), we get a palindrome (32226662223).

It can be divided in two parts, 11013 and 331212, that added together give a square (342225 = 585²).

The spelling of 11013331212 in words is "eleven billion, thirteen million, three hundred thirty-one thousand, two hundred twelve".