11279140212 has 96 divisors (see below), whose sum is σ = 28633530240. Its totient is φ = 3442360320.

The previous prime is 11279140207. The next prime is 11279140231. The reversal of 11279140212 is 21204197211.

It is a self number, because there is not a number n which added to its sum of digits gives 11279140212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1162662 + ... + 1172322.

It is an arithmetic number, because the mean of its divisors is an integer number (298265940).

Almost surely, 2^11279140212 is an apocalyptic number.

11279140212 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 11279140212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14316765120).

11279140212 is an abundant number, since it is smaller than the sum of its proper divisors (17354390028).

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

11279140212 is a wasteful number, since it uses less digits than its factorization.

11279140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9841 (or 9839 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The spelling of 11279140212 in words is "eleven billion, two hundred seventy-nine million, one hundred forty thousand, two hundred twelve".