204120340100001 has 12 divisors (see below), whose sum is σ = 317520529044628. Its totient is φ = 125612516984544.

The previous prime is 204120340099933. The next prime is 204120340100011. The reversal of 204120340100001 is 100001043021402.

204120340100001 is a `hidden beast` number, since 20 + 41 + 203 + 401 + 0 + 0 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19868628715776 + 184251711384225 = 4457424^2 + 13573935^2 .

It is not a de Polignac number, because 204120340100001 - 2¹³ = 204120340091809 is a prime.

It is a super-2 number, since 2×204120340100001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204120340100011) 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, 872309145610 + ... + 872309145843.

Almost surely, 2^{204120340100001} is an apocalyptic number.

It is an amenable number.

204120340100001 is a deficient number, since it is larger than the sum of its proper divisors (113400188944627).

204120340100001 is a wasteful number, since it uses less digits than its factorization.

204120340100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744618291472 (or 1744618291469 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 204120340100001 its reverse (100001043021402), we get a palindrome (304121383121403).

The spelling of 204120340100001 in words is "two hundred four trillion, one hundred twenty billion, three hundred forty million, one hundred thousand, one".