2001210200001 has 6 divisors (see below), whose sum is σ = 2890636955570. Its totient is φ = 1334140133328.

The previous prime is 2001210199993. The next prime is 2001210200021. The reversal of 2001210200001 is 1000020121002.

It can be written as a sum of positive squares in only one way, i.e., 1214130719376 + 787079480625 = 1101876^2 + 887175^2 .

It is not a de Polignac number, because 2001210200001 - 2³ = 2001210199993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222356688889 = 2001210200001 / (2 + 0 + 0 + 1 + 2 + 1 + 0 + 2 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001210200021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111178344436 + ... + 111178344453.

Almost surely, 2^{2001210200001} is an apocalyptic number.

It is an amenable number.

2001210200001 is a deficient number, since it is larger than the sum of its proper divisors (889426755569).

2001210200001 is a wasteful number, since it uses less digits than its factorization.

2001210200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222356688895 (or 222356688892 counting only the distinct ones).

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

Adding to 2001210200001 its reverse (1000020121002), we get a palindrome (3001230321003).

The spelling of 2001210200001 in words is "two trillion, one billion, two hundred ten million, two hundred thousand, one".