212021100202001 has 4 divisors (see below), whose sum is σ = 212351866349604. Its totient is φ = 211690334054400.

The previous prime is 212021100201947. The next prime is 212021100202019. The reversal of 212021100202001 is 100202001120212.

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 125879962701376 + 86141137500625 = 11219624^2 + 9281225^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021100202001 - 2³⁴ = 212003920332817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021100202061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165383072840 + ... + 165383074121.

It is an arithmetic number, because the mean of its divisors is an integer number (53087966587401).

Almost surely, 2^{212021100202001} is an apocalyptic number.

It is an amenable number.

212021100202001 is a deficient number, since it is larger than the sum of its proper divisors (330766147603).

212021100202001 is an equidigital number, since it uses as much as digits as its factorization.

212021100202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330766147602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212021100202001 its reverse (100202001120212), we get a palindrome (312223101322213).

The spelling of 212021100202001 in words is "two hundred twelve trillion, twenty-one billion, one hundred million, two hundred two thousand, one".