102020100001 has 4 divisors (see below), whose sum is σ = 108021282372. Its totient is φ = 96018917632.

The previous prime is 102020099989. The next prime is 102020100071. The reversal of 102020100001 is 100001020201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48984312976 + 53035787025 = 221324^2 + 230295^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020100001 - 2²³ = 102011711393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020100071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000591160 + ... + 3000591193.

It is an arithmetic number, because the mean of its divisors is an integer number (27005320593).

Almost surely, 2^102020100001 is an apocalyptic number.

It is an amenable number.

102020100001 is a deficient number, since it is larger than the sum of its proper divisors (6001182371).

102020100001 is an equidigital number, since it uses as much as digits as its factorization.

102020100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001182370.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 102020100001 its reverse (100001020201), we get a palindrome (202021120202).

The spelling of 102020100001 in words is "one hundred two billion, twenty million, one hundred thousand, one".