212002221100001 has 4 divisors (see below), whose sum is σ = 215477667347604. Its totient is φ = 208526774852400.

The previous prime is 212002221099937. The next prime is 212002221100009. The reversal of 212002221100001 is 100001122200212.

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 1902965070400 + 210099256029601 = 1379480^2 + 14494801^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002221100001 - 2⁶ = 212002221099937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002221100009) 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, 1737723123710 + ... + 1737723123831.

It is an arithmetic number, because the mean of its divisors is an integer number (53869416836901).

Almost surely, 2^{212002221100001} is an apocalyptic number.

It is an amenable number.

212002221100001 is a deficient number, since it is larger than the sum of its proper divisors (3475446247603).

212002221100001 is an equidigital number, since it uses as much as digits as its factorization.

212002221100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475446247602.

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

Adding to 212002221100001 its reverse (100001122200212), we get a palindrome (312003343300213).

The spelling of 212002221100001 in words is "two hundred twelve trillion, two billion, two hundred twenty-one million, one hundred thousand, one".