210020000012001 has 10 divisors (see below), whose sum is σ = 313733580264962. Its totient is φ = 140013333341280.

The previous prime is 210020000011963. The next prime is 210020000012047. The reversal of 210020000012001 is 100210000020012.

It can be written as a sum of positive squares in only one way, i.e., 201265265866401 + 8754734145600 = 14186799^2 + 2958840^2 .

It is a de Polignac number, because none of the positive numbers 2^k-210020000012001 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020000012051) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1296419753080 + ... + 1296419753241.

Almost surely, 2^{210020000012001} is an apocalyptic number.

It is an amenable number.

210020000012001 is a deficient number, since it is larger than the sum of its proper divisors (103713580252961).

210020000012001 is an equidigital number, since it uses as much as digits as its factorization.

210020000012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592839506333 (or 2592839506324 counting only the distinct ones).

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

Adding to 210020000012001 its reverse (100210000020012), we get a palindrome (310230000032013).

The spelling of 210020000012001 in words is "two hundred ten trillion, twenty billion, twelve thousand, one".