211002002201021 has 8 divisors (see below), whose sum is σ = 223416299209464. Its totient is φ = 198587973473280.

The previous prime is 211002002200937. The next prime is 211002002201033. The reversal of 211002002201021 is 120102200200112.

It can be written as a sum of positive squares in 4 ways, for example, as 43624519072996 + 167377483128025 = 6604886^2 + 12937445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211002002201021 - 2¹⁰ = 211002002199997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211002002200987 and 211002002201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002002207021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65449790 + ... + 68597951.

It is an arithmetic number, because the mean of its divisors is an integer number (27927037401183).

Almost surely, 2^{211002002201021} is an apocalyptic number.

It is an amenable number.

211002002201021 is a deficient number, since it is larger than the sum of its proper divisors (12414297008443).

211002002201021 is a wasteful number, since it uses less digits than its factorization.

211002002201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134140351.

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

Adding to 211002002201021 its reverse (120102200200112), we get a palindrome (331104202401133).

The spelling of 211002002201021 in words is "two hundred eleven trillion, two billion, two million, two hundred one thousand, twenty-one".