212102001012001 has 4 divisors (see below), whose sum is σ = 213328024139412. Its totient is φ = 210875977884592.

The previous prime is 212102001011917. The next prime is 212102001012017. The reversal of 212102001012001 is 100210100201212.

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 100382364810000 + 111719636202001 = 10019100^2 + 10569751^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102001012001 - 2¹⁵ = 212102000979233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102004012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613011563446 + ... + 613011563791.

It is an arithmetic number, because the mean of its divisors is an integer number (53332006034853).

Almost surely, 2^{212102001012001} is an apocalyptic number.

It is an amenable number.

212102001012001 is a deficient number, since it is larger than the sum of its proper divisors (1226023127411).

212102001012001 is a wasteful number, since it uses less digits than its factorization.

212102001012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226023127410.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212102001012001 its reverse (100210100201212), we get a palindrome (312312101213213).

The spelling of 212102001012001 in words is "two hundred twelve trillion, one hundred two billion, one million, twelve thousand, one".