212021122100022 has 48 divisors (see below), whose sum is σ = 487331419919760. Its totient is φ = 66389247945216.

The previous prime is 212021122100003. The next prime is 212021122100083. The reversal of 212021122100022 is 220001221120212.

It is a happy number.

212021122100022 is a `hidden beast` number, since 212 + 0 + 211 + 221 + 0 + 0 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212021122099968 and 212021122100004.

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 23 ways as a sum of consecutive naturals, for example, 662248647 + ... + 662568722.

It is an arithmetic number, because the mean of its divisors is an integer number (10152737914995).

Almost surely, 2^{212021122100022} is an apocalyptic number.

212021122100022 is an abundant number, since it is smaller than the sum of its proper divisors (275310297819738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212021122100022 is a wasteful number, since it uses less digits than its factorization.

212021122100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324817917 (or 1324817914 counting only the distinct ones).

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

Adding to 212021122100022 its reverse (220001221120212), we get a palindrome (432022343220234).

The spelling of 212021122100022 in words is "two hundred twelve trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, twenty-two".