20211222010120 has 128 divisors (see below), whose sum is σ = 49284512259840. Its totient is φ = 7429795430400.

The previous prime is 20211222010099. The next prime is 20211222010121. The reversal of 20211222010120 is 2101022211202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211222010094 and 20211222010103.

It is not an unprimeable number, because it can be changed into a prime (20211222010121) by changing a digit.

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, 101158320 + ... + 101357920.

It is an arithmetic number, because the mean of its divisors is an integer number (385035252030).

Almost surely, 2^{20211222010120} is an apocalyptic number.

20211222010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211222010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24642256129920).

20211222010120 is an abundant number, since it is smaller than the sum of its proper divisors (29073290249720).

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

20211222010120 is a wasteful number, since it uses less digits than its factorization.

20211222010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203135 (or 203131 counting only the distinct ones).

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

Adding to 20211222010120 its reverse (2101022211202), we get a palindrome (22312244221322).

The spelling of 20211222010120 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, ten thousand, one hundred twenty".