20221221211210 has 16 divisors (see below), whose sum is σ = 38313892821600. Its totient is φ = 7662778564176.

The previous prime is 20221221211207. The next prime is 20221221211253. The reversal of 20221221211210 is 1211212212202.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 7 ways as a sum of consecutive naturals, for example, 53213739840 + ... + 53213740219.

It is an arithmetic number, because the mean of its divisors is an integer number (2394618301350).

Almost surely, 2^{20221221211210} is an apocalyptic number.

20221221211210 is a deficient number, since it is larger than the sum of its proper divisors (18092671610390).

20221221211210 is a wasteful number, since it uses less digits than its factorization.

20221221211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106427480085.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20221221211210 its reverse (1211212212202), we get a palindrome (21432433423412).

The spelling of 20221221211210 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred ten".