20112544212 has 96 divisors (see below), whose sum is σ = 53252059392. Its totient is φ = 5872306176.

The previous prime is 20112544187. The next prime is 20112544217. The reversal of 20112544212 is 21244521102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112544217) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 115678 + ... + 231530.

It is an arithmetic number, because the mean of its divisors is an integer number (554708952).

Almost surely, 2^20112544212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112544212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26626029696).

20112544212 is an abundant number, since it is smaller than the sum of its proper divisors (33139515180).

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

20112544212 is a wasteful number, since it uses less digits than its factorization.

20112544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115937 (or 115935 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The spelling of 20112544212 in words is "twenty billion, one hundred twelve million, five hundred forty-four thousand, two hundred twelve".