20011012010000 has 400 divisors, whose sum is σ = 53476175246208. Its totient is φ = 7191244800000.

The previous prime is 20011012009951. The next prime is 20011012010081. The reversal of 20011012010000 is 1021011002.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20011012010000.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6537408470 + ... + 6537411530.

Almost surely, 2^{20011012010000} is an apocalyptic number.

20011012010000 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 20011012010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26738087623104).

20011012010000 is an abundant number, since it is smaller than the sum of its proper divisors (33465163236208).

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

20011012010000 is a wasteful number, since it uses less digits than its factorization.

20011012010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780 (or 3759 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20011012010000 its reverse (1021011002), we get a palindrome (20012033021002).

The spelling of 20011012010000 in words is "twenty trillion, eleven billion, twelve million, ten thousand".