210001001001201 has 24 divisors (see below), whose sum is σ = 303784666436160. Its totient is φ = 139793180177376.

The previous prime is 210001001001179. The next prime is 210001001001203. The reversal of 210001001001201 is 102100100100012.

It is a happy number.

It is not a de Polignac number, because 210001001001201 - 2⁷ = 210001001001073 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 (210001001001203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10086340 + ... + 22841546.

It is an arithmetic number, because the mean of its divisors is an integer number (12657694434840).

Almost surely, 2^{210001001001201} is an apocalyptic number.

It is an amenable number.

210001001001201 is a deficient number, since it is larger than the sum of its proper divisors (93783665434959).

210001001001201 is a wasteful number, since it uses less digits than its factorization.

210001001001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12757925 (or 12757922 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 210001001001201 its reverse (102100100100012), we get a palindrome (312101101101213).

The spelling of 210001001001201 in words is "two hundred ten trillion, one billion, one million, one thousand, two hundred one".