10212122202021 has 12 divisors (see below), whose sum is σ = 15297170706272. Its totient is φ = 6808081467852.

The previous prime is 10212122202001. The next prime is 10212122202047. The reversal of 10212122202021 is 12020222121201.

It is a happy number.

10212122202021 is a `hidden beast` number, since 10 + 21 + 212 + 220 + 202 + 1 = 666.

It is not a de Polignac number, because 10212122202021 - 2¹⁹ = 10212121677733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212122201985 and 10212122202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212122202001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21012596881 + ... + 21012597366.

Almost surely, 2^{10212122202021} is an apocalyptic number.

It is an amenable number.

10212122202021 is a deficient number, since it is larger than the sum of its proper divisors (5085048504251).

10212122202021 is an frugal number, since it uses more digits than its factorization.

10212122202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42025194262 (or 42025194250 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10212122202021 its reverse (12020222121201), we get a palindrome (22232344323222).

The spelling of 10212122202021 in words is "ten trillion, two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, twenty-one".