20102122212201 has 24 divisors (see below), whose sum is σ = 29158549655040. Its totient is φ = 13345040007936.

The previous prime is 20102122212187. The next prime is 20102122212209. The reversal of 20102122212201 is 10221222120102.

It is a happy number.

20102122212201 is a `hidden beast` number, since 2 + 0 + 10 + 212 + 221 + 220 + 1 = 666.

It is not a de Polignac number, because 20102122212201 - 2¹¹ = 20102122210153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102122212209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135281721 + ... + 135430233.

It is an arithmetic number, because the mean of its divisors is an integer number (1214939568960).

Almost surely, 2^{20102122212201} is an apocalyptic number.

It is an amenable number.

20102122212201 is a deficient number, since it is larger than the sum of its proper divisors (9056427442839).

20102122212201 is a wasteful number, since it uses less digits than its factorization.

20102122212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211685 (or 211682 counting only the distinct ones).

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

Adding to 20102122212201 its reverse (10221222120102), we get a palindrome (30323344332303).

The spelling of 20102122212201 in words is "twenty trillion, one hundred two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred one".