20001020201222 has 32 divisors (see below), whose sum is σ = 30207814981344. Its totient is φ = 9931940928000.

The previous prime is 20001020201221. The next prime is 20001020201311. The reversal of 20001020201222 is 22210202010002.

It is a junction number, because it is equal to n+sod(n) for n = 20001020201197 and 20001020201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001020201221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861989873 + ... + 862013075.

It is an arithmetic number, because the mean of its divisors is an integer number (943994218167).

Almost surely, 2^{20001020201222} is an apocalyptic number.

20001020201222 is a deficient number, since it is larger than the sum of its proper divisors (10206794780122).

20001020201222 is a wasteful number, since it uses less digits than its factorization.

20001020201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27224.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20001020201222 its reverse (22210202010002), we get a palindrome (42211222211224).

The spelling of 20001020201222 in words is "twenty trillion, one billion, twenty million, two hundred one thousand, two hundred twenty-two".