20001012011200 has 84 divisors (see below), whose sum is σ = 53689080243672. Its totient is φ = 7273095270400.

The previous prime is 20001012011173. The next prime is 20001012011327. The reversal of 20001012011200 is 211021010002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568192969 + ... + 568228168.

Almost surely, 2^{20001012011200} is an apocalyptic number.

20001012011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001012011200 is an abundant number, since it is smaller than the sum of its proper divisors (33688068232472).

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

20001012011200 is a wasteful number, since it uses less digits than its factorization.

20001012011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136421170 (or 1136421155 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001012011200 its reverse (211021010002), we get a palindrome (20212033021202).

The spelling of 20001012011200 in words is "twenty trillion, one billion, twelve million, eleven thousand, two hundred".