20001201011200 has 60 divisors (see below), whose sum is σ = 49554538130790. Its totient is φ = 8000480399360.

The previous prime is 20001201011191. The next prime is 20001201011213. The reversal of 20001201011200 is 211010210002.

It can be written as a sum of positive squares in 3 ways, for example, as 17085193963776 + 2916007047424 = 4133424^2 + 1707632^2 .

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 5 ways as a sum of consecutive naturals, for example, 781284115 + ... + 781309714.

Almost surely, 2^{20001201011200} is an apocalyptic number.

20001201011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001201011200 is an abundant number, since it is smaller than the sum of its proper divisors (29553337119590).

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

20001201011200 is an equidigital number, since it uses as much as digits as its factorization.

20001201011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562593857 (or 1562593836 counting only the distinct ones).

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

Adding to 20001201011200 its reverse (211010210002), we get a palindrome (20212211221202).

The spelling of 20001201011200 in words is "twenty trillion, one billion, two hundred one million, eleven thousand, two hundred".