210001200122001 has 16 divisors (see below), whose sum is σ = 283560957331200. Its totient is φ = 138221309411328.

The previous prime is 210001200121963. The next prime is 210001200122009. The reversal of 210001200122001 is 100221002100012.

It is not a de Polignac number, because 210001200122001 - 2²² = 210001195927697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210001200122009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19007856 + ... + 27951761.

It is an arithmetic number, because the mean of its divisors is an integer number (17722559833200).

Almost surely, 2^{210001200122001} is an apocalyptic number.

It is an amenable number.

210001200122001 is a deficient number, since it is larger than the sum of its proper divisors (73559757209199).

210001200122001 is a wasteful number, since it uses less digits than its factorization.

210001200122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46978568.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210001200122001 its reverse (100221002100012), we get a palindrome (310222202222013).

The spelling of 210001200122001 in words is "two hundred ten trillion, one billion, two hundred million, one hundred twenty-two thousand, one".