20201112520 has 64 divisors (see below), whose sum is σ = 47618202240. Its totient is φ = 7698240000.

The previous prime is 20201112511. The next prime is 20201112553. The reversal of 20201112520 is 2521110202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20201112494 and 20201112503.

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 15 ways as a sum of consecutive naturals, for example, 187180 + ... + 274660.

It is an arithmetic number, because the mean of its divisors is an integer number (744034410).

Almost surely, 2^20201112520 is an apocalyptic number.

20201112520 is a gapful number since it is divisible by the number (20) 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 20201112520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23809101120).

20201112520 is an abundant number, since it is smaller than the sum of its proper divisors (27417089720).

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

20201112520 is a wasteful number, since it uses less digits than its factorization.

20201112520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87766 (or 87762 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20201112520 its reverse (2521110202), we get a palindrome (22722222722).

The spelling of 20201112520 in words is "twenty billion, two hundred one million, one hundred twelve thousand, five hundred twenty".