11212315530 has 128 divisors (see below), whose sum is σ = 31557254400. Its totient is φ = 2524483584.

The previous prime is 11212315529. The next prime is 11212315553. The reversal of 11212315530 is 3551321211.

11212315530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11212315530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188802 + ... + 240978.

It is an arithmetic number, because the mean of its divisors is an integer number (246541050).

Almost surely, 2^11212315530 is an apocalyptic number.

11212315530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212315530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15778627200).

11212315530 is an abundant number, since it is smaller than the sum of its proper divisors (20344938870).

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

11212315530 is a wasteful number, since it uses less digits than its factorization.

11212315530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52248.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 11212315530 its reverse (3551321211), we get a palindrome (14763636741).

The spelling of 11212315530 in words is "eleven billion, two hundred twelve million, three hundred fifteen thousand, five hundred thirty".