10212010020221 has 4 divisors (see below), whose sum is σ = 10212788328444. Its totient is φ = 10211231712000.

The previous prime is 10212010020197. The next prime is 10212010020257. The reversal of 10212010020221 is 12202001021201.

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 3228220725625 + 6983789294596 = 1796725^2 + 2642686^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212010020221 - 2¹⁴ = 10212010003837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212010020196 and 10212010020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212010020271) 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, 389134430 + ... + 389160671.

It is an arithmetic number, because the mean of its divisors is an integer number (2553197082111).

Almost surely, 2^{10212010020221} is an apocalyptic number.

It is an amenable number.

10212010020221 is a deficient number, since it is larger than the sum of its proper divisors (778308223).

10212010020221 is an equidigital number, since it uses as much as digits as its factorization.

10212010020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778308222.

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

Adding to 10212010020221 its reverse (12202001021201), we get a palindrome (22414011041422).

The spelling of 10212010020221 in words is "ten trillion, two hundred twelve billion, ten million, twenty thousand, two hundred twenty-one".