20120100200001 has 12 divisors (see below), whose sum is σ = 29067749942400. Its totient is φ = 13410915677880.

The previous prime is 20120100199949. The next prime is 20120100200027. The reversal of 20120100200001 is 10000200102102.

It is not a de Polignac number, because 20120100200001 - 2¹⁹ = 20120099675713 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (20120100200201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206986665 + ... + 207083846.

It is an arithmetic number, because the mean of its divisors is an integer number (2422312495200).

Almost surely, 2^{20120100200001} is an apocalyptic number.

It is an amenable number.

20120100200001 is a deficient number, since it is larger than the sum of its proper divisors (8947649742399).

20120100200001 is a wasteful number, since it uses less digits than its factorization.

20120100200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414075916 (or 414075913 counting only the distinct ones).

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

Adding to 20120100200001 its reverse (10000200102102), we get a palindrome (30120300302103).

It can be divided in two parts, 20120 and 100200001, that added together give a square (100220121 = 10011²).

The spelling of 20120100200001 in words is "twenty trillion, one hundred twenty billion, one hundred million, two hundred thousand, one".