11320528212 has 108 divisors (see below), whose sum is σ = 33412890420. Its totient is φ = 3222277632.

The previous prime is 11320528129. The next prime is 11320528229. The reversal of 11320528212 is 21282502311.

11320528212 is a `hidden beast` number, since 1 + 132 + 0 + 528 + 2 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 662856516 + 10657671696 = 25746^2 + 103236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 462588 + ... + 486444.

It is an arithmetic number, because the mean of its divisors is an integer number (309378615).

Almost surely, 2^11320528212 is an apocalyptic number.

11320528212 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 11320528212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16706445210).

11320528212 is an abundant number, since it is smaller than the sum of its proper divisors (22092362208).

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

11320528212 is a wasteful number, since it uses less digits than its factorization.

11320528212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24150 (or 24138 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 11320528212 in words is "eleven billion, three hundred twenty million, five hundred twenty-eight thousand, two hundred twelve".