20211221000210 has 64 divisors (see below), whose sum is σ = 37015775850240. Its totient is φ = 7944032194560.

The previous prime is 20211221000183. The next prime is 20211221000297. The reversal of 20211221000210 is 1200012211202.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 523546769 + ... + 523585371.

It is an arithmetic number, because the mean of its divisors is an integer number (578371497660).

Almost surely, 2^{20211221000210} is an apocalyptic number.

20211221000210 is a deficient number, since it is larger than the sum of its proper divisors (16804554850030).

20211221000210 is a wasteful number, since it uses less digits than its factorization.

20211221000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41123.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211221000210 its reverse (1200012211202), we get a palindrome (21411233211412).

The spelling of 20211221000210 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-one million, two hundred ten", and thus it is an aban number.