20012112000 has 384 divisors, whose sum is σ = 74203384320. Its totient is φ = 5163264000.

The previous prime is 20012111971. The next prime is 20012112017. The reversal of 20012112000 is 21121002.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4461759 + ... + 4466241.

It is an arithmetic number, because the mean of its divisors is an integer number (193237980).

Almost surely, 2^20012112000 is an apocalyptic number.

20012112000 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 20012112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37101692160).

20012112000 is an abundant number, since it is smaller than the sum of its proper divisors (54191272320).

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

20012112000 is a wasteful number, since it uses less digits than its factorization.

20012112000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4524 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20012112000 its reverse (21121002), we get a palindrome (20033233002).

The spelling of 20012112000 in words is "twenty billion, twelve million, one hundred twelve thousand".