11231322205530 has 128 divisors (see below), whose sum is σ = 32656272864768. Its totient is φ = 2413316800512.

The previous prime is 11231322205507. The next prime is 11231322205567. The reversal of 11231322205530 is 3550222313211.

It is a super-3 number, since 3×11231322205530³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1201114 + ... + 4889306.

It is an arithmetic number, because the mean of its divisors is an integer number (255127131756).

Almost surely, 2^{11231322205530} is an apocalyptic number.

11231322205530 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 11231322205530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16328136432384).

11231322205530 is an abundant number, since it is smaller than the sum of its proper divisors (21424950659238).

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

11231322205530 is a wasteful number, since it uses less digits than its factorization.

11231322205530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689080.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 11231322205530 its reverse (3550222313211), we get a palindrome (14781544518741).

The spelling of 11231322205530 in words is "eleven trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred five thousand, five hundred thirty".