20102122122212 has 12 divisors (see below), whose sum is σ = 37884768615036. Its totient is φ = 9277902517920.

The previous prime is 20102122122169. The next prime is 20102122122293. The reversal of 20102122122212 is 21222122120102.

It can be written as a sum of positive squares in 2 ways, for example, as 7215917572516 + 12886204549696 = 2686246^2 + 3589736^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193289635739 + ... + 193289635842.

It is an arithmetic number, because the mean of its divisors is an integer number (3157064051253).

Almost surely, 2^{20102122122212} is an apocalyptic number.

It is an amenable number.

20102122122212 is a deficient number, since it is larger than the sum of its proper divisors (17782646492824).

20102122122212 is a wasteful number, since it uses less digits than its factorization.

20102122122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386579271598 (or 386579271596 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20102122122212 its reverse (21222122120102), we get a palindrome (41324244242314).

The spelling of 20102122122212 in words is "twenty trillion, one hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".