10021211202221 has 16 divisors (see below), whose sum is σ = 10453658181120. Its totient is φ = 9595636669440.

The previous prime is 10021211202199. The next prime is 10021211202313. The reversal of 10021211202221 is 12220211212001.

It is a cyclic number.

It is not a de Polignac number, because 10021211202221 - 2¹⁴ = 10021211185837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021211202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021211202721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12043385 + ... + 12848561.

It is an arithmetic number, because the mean of its divisors is an integer number (653353636320).

Almost surely, 2^{10021211202221} is an apocalyptic number.

It is an amenable number.

10021211202221 is a deficient number, since it is larger than the sum of its proper divisors (432446978899).

10021211202221 is an equidigital number, since it uses as much as digits as its factorization.

10021211202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809444.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10021211202221 its reverse (12220211212001), we get a palindrome (22241422414222).

The spelling of 10021211202221 in words is "ten trillion, twenty-one billion, two hundred eleven million, two hundred two thousand, two hundred twenty-one".