11212530 has 64 divisors (see below), whose sum is σ = 31104000. Its totient is φ = 2533824.

The previous prime is 11212529. The next prime is 11212573. The reversal of 11212530 is 3521211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22221 + ... + 22719.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^11212530 is an apocalyptic number.

11212530 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 11212530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15552000).

11212530 is an abundant number, since it is smaller than the sum of its proper divisors (19891470).

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

11212530 is a wasteful number, since it uses less digits than its factorization.

11212530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11212530 is about 3348.5116096558. The cubic root of 11212530 is about 223.8211928714.

Adding to 11212530 its reverse (3521211), we get a palindrome (14733741).

The spelling of 11212530 in words is "eleven million, two hundred twelve thousand, five hundred thirty".