20003212112 has 80 divisors (see below), whose sum is σ = 44237168640. Its totient is φ = 8680421376.

The previous prime is 20003212109. The next prime is 20003212123. The reversal of 20003212112 is 21121230002.

It is a happy number.

It is a congruent number.

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, 4520333 + ... + 4524755.

It is an arithmetic number, because the mean of its divisors is an integer number (552964608).

Almost surely, 2^20003212112 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 20003212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22118584320).

20003212112 is an abundant number, since it is smaller than the sum of its proper divisors (24233956528).

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

20003212112 is a wasteful number, since it uses less digits than its factorization.

20003212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740 (or 5734 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20003212112 its reverse (21121230002), we get a palindrome (41124442114).

The spelling of 20003212112 in words is "twenty billion, three million, two hundred twelve thousand, one hundred twelve".