20102212102021 has 24 divisors (see below), whose sum is σ = 24017289558080. Its totient is φ = 16480605689856.

The previous prime is 20102212102003. The next prime is 20102212102039. The reversal of 20102212102021 is 12020121220102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20102212102003) and next prime (20102212102039).

It is not a de Polignac number, because 20102212102021 - 2⁷ = 20102212101893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102212101986 and 20102212102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102212102001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96481285 + ... + 96689413.

Almost surely, 2^{20102212102021} is an apocalyptic number.

It is an amenable number.

20102212102021 is a deficient number, since it is larger than the sum of its proper divisors (3915077456059).

20102212102021 is a wasteful number, since it uses less digits than its factorization.

20102212102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234265 (or 234242 counting only the distinct ones).

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

Adding to 20102212102021 its reverse (12020121220102), we get a palindrome (32122333322123).

The spelling of 20102212102021 in words is "twenty trillion, one hundred two billion, two hundred twelve million, one hundred two thousand, twenty-one".