10002112222021 has 6 divisors (see below), whose sum is σ = 10358905762322. Its totient is φ = 9657211799760.

The previous prime is 10002112222001. The next prime is 10002112222057. The reversal of 10002112222021 is 12022221120001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1824428309796 + 8177683912225 = 1350714^2 + 2859665^2 .

It is not a de Polignac number, because 10002112222021 - 2¹¹ = 10002112219973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002112221986 and 10002112222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002112222001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5946558150 + ... + 5946559831.

Almost surely, 2^{10002112222021} is an apocalyptic number.

It is an amenable number.

10002112222021 is a deficient number, since it is larger than the sum of its proper divisors (356793540301).

10002112222021 is an equidigital number, since it uses as much as digits as its factorization.

10002112222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11893118039 (or 11893118010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10002112222021 its reverse (12022221120001), we get a palindrome (22024333342022).

The spelling of 10002112222021 in words is "ten trillion, two billion, one hundred twelve million, two hundred twenty-two thousand, twenty-one".