212101102021201 has 4 divisors (see below), whose sum is σ = 214201112932404. Its totient is φ = 210001091110000.

The previous prime is 212101102021183. The next prime is 212101102021247. The reversal of 212101102021201 is 102120201101212.

212101102021201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 94990266227025 + 117110835794176 = 9746295^2 + 10821776^2 .

It is a cyclic number.

It is not a de Polignac number, because 212101102021201 - 2¹⁷ = 212101101890129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101102021001) 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, 1050005455450 + ... + 1050005455651.

It is an arithmetic number, because the mean of its divisors is an integer number (53550278233101).

Almost surely, 2^{212101102021201} is an apocalyptic number.

It is an amenable number.

212101102021201 is a deficient number, since it is larger than the sum of its proper divisors (2100010911203).

212101102021201 is a wasteful number, since it uses less digits than its factorization.

212101102021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100010911202.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212101102021201 its reverse (102120201101212), we get a palindrome (314221303122413).

The spelling of 212101102021201 in words is "two hundred twelve trillion, one hundred one billion, one hundred two million, twenty-one thousand, two hundred one".