20221221120210 has 96 divisors (see below), whose sum is σ = 57402815678208. Its totient is φ = 4898004860160.

The previous prime is 20221221120203. The next prime is 20221221120229. The reversal of 20221221120210 is 1202112212202.

It is a happy number.

20221221120210 is a `hidden beast` number, since 2 + 0 + 221 + 2 + 211 + 20 + 210 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7379482 + ... + 9741621.

It is an arithmetic number, because the mean of its divisors is an integer number (597945996648).

Almost surely, 2^{20221221120210} is an apocalyptic number.

20221221120210 is an abundant number, since it is smaller than the sum of its proper divisors (37181594557998).

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

20221221120210 is a wasteful number, since it uses less digits than its factorization.

20221221120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17122320 (or 17122317 counting only the distinct ones).

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

Adding to 20221221120210 its reverse (1202112212202), we get a palindrome (21423333332412).

The spelling of 20221221120210 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred ten".