22021210100212 has 12 divisors (see below), whose sum is σ = 38537163144900. Its totient is φ = 11010592058816.

The previous prime is 22021210100159. The next prime is 22021210100237. The reversal of 22021210100212 is 21200101212022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 446058351376 + 21575151748836 = 667876^2 + 4644906^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1261848 + ... + 6755344.

It is an arithmetic number, because the mean of its divisors is an integer number (3211430262075).

Almost surely, 2^{22021210100212} is an apocalyptic number.

It is an amenable number.

22021210100212 is a deficient number, since it is larger than the sum of its proper divisors (16515953044688).

22021210100212 is a wasteful number, since it uses less digits than its factorization.

22021210100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6495650 (or 6495648 counting only the distinct ones).

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

Adding to 22021210100212 its reverse (21200101212022), we get a palindrome (43221311312234).

The spelling of 22021210100212 in words is "twenty-two trillion, twenty-one billion, two hundred ten million, one hundred thousand, two hundred twelve".