202110100001 has 2 divisors, whose sum is σ = 202110100002. Its totient is φ = 202110100000.

The previous prime is 202110099991. The next prime is 202110100061. The reversal of 202110100001 is 100001011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145679622400 + 56430477601 = 381680^2 + 237551^2 .

It is a cyclic number.

It is not a de Polignac number, because 202110100001 - 2⁶ = 202110099937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (202110100061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055050000 + 101055050001.

It is an arithmetic number, because the mean of its divisors is an integer number (101055050001).

Almost surely, 2^202110100001 is an apocalyptic number.

It is an amenable number.

202110100001 is a deficient number, since it is larger than the sum of its proper divisors (1).

202110100001 is an equidigital number, since it uses as much as digits as its factorization.

202110100001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 202110100001 its reverse (100001011202), we get a palindrome (302111111203).

The spelling of 202110100001 in words is "two hundred two billion, one hundred ten million, one hundred thousand, one".