12206311520 has 96 divisors (see below), whose sum is σ = 31081397760. Its totient is φ = 4503214080.

The previous prime is 12206311517. The next prime is 12206311543. The reversal of 12206311520 is 2511360221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4655810 + ... + 4658430.

It is an arithmetic number, because the mean of its divisors is an integer number (323764560).

Almost surely, 2^12206311520 is an apocalyptic number.

12206311520 is a gapful number since it is divisible by the number (10) 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 12206311520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15540698880).

12206311520 is an abundant number, since it is smaller than the sum of its proper divisors (18875086240).

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

12206311520 is a wasteful number, since it uses less digits than its factorization.

12206311520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888 (or 4880 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 12206311520 its reverse (2511360221), we get a palindrome (14717671741).

The spelling of 12206311520 in words is "twelve billion, two hundred six million, three hundred eleven thousand, five hundred twenty".